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2015 5 UNU USUA AL TR ROPIC CALS S AND D ANNU A UALS SALE E CAT TALO OG Th he Sco ott Arbo oretum m of Swarth S hmore Colleg ge www.sc cottarborretum.org g May 15 - 16 6, 2015 5 2015 Unusual Tropicals and Annuals Sale Friday, May 15, 5:30 to 7:30 pm Preview Party (tickets may be purchased in advance or at the door) Saturday, May 16, 10 am – noon Members of the Scott Associates (memberships may be purchased at the door) Saturday, May 16, noon – 3 pm Public Shopping Thank you for your support! As a customer of the Unusual Tropicals and Annuals Plant Sale, you support the Scott Arboretum of Swarthmore College and we thank you. Funds raised support operational costs including public outreach and educational programming. Through plant sales, we fulfill our basic mission by getting good plants into the hand of gardeners and encouraging an interest in plants and gardening. Please note: All sales are final; no exchanges or refunds. We are not able to offer refunds or exchanges since this is a special, once-a-year event. Appropriate care is necessary for living plants to thrive; some have more demanding needs than others, so spend time to learn whether you can provide the right environment for the plant. We aim to help all gardeners, especially beginners, to succeed with their plants and learn how to successfully garden and grow plants. To help, we produced this handbook, outlining cultural requirements of the plants offered. This publication is also posted on our website: www.scottarboretum.org. Printed copies are also available to consult during the sale and Plant Experts are present to answer questions and guide your decisions. We also encourage you to return and use our horticultural library and consult with staff members. And don’t forget, thanks to modern technology, gardening advice is a simple computer click away and available at all hours within seconds! 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 2 2015 Unusual Tropicals and Annuals Sale Catalog Compiled by Eve Thyrum, Scott Arboretum Volunteer Abelmoschus manihot ‘Cream Cup’ (Flowering Okra) – This quick growing, well-branched annual matures to a height of 4’ to 5’. Large 6”, buttery-yellow, paper-thin hibiscus flowers with a dark burgundy eye begin flowering in June and will continue to bloom all summer if deadheaded on a regular basis. The okra-shaped seedpods are quite decorative. Plant in a sunny location in moist, well-drained soil. Accompany with grasses, shrubs, and tall growing perennials. This member of the Hibiscus Family (Malvaceae) is native to eastern and southeastern Asia as well as northern Australia. Abutilon pictum ‘Thompsonii’ (Flowering Maple) – When selecting a flowering maple as a “thriller” plant for your container, choose an upright shrubby plant, such as ‘Thompsonii’. In one season it will grow 3’ tall, making it a good choice for large summer containers. Prized for its strikingly mottled, green and yellow foliage; its creamy orange flowers add icing to the cake and bloom from spring to fall. This selection of the Brazilian native A. pictum is a member of the Mallow Family (Malvaceae). Site in morning sun to light shade in moist, well-drained soil and watch the hummingbirds enjoy. Acalypha godseffiana ‘Heterophylla’ (Copperleaf) – A very colorful tropical shrub grown for its attractive lance-shaped, rusty orange, serrated leaves splashed with gold and a little green. Leaves, much smaller than your typical copperleaf, are orange/red in full sun and mostly variegated green in shade. The more sun, the more colorful the leaves will be. This fastgrowing native of the East Indies and South Pacific is widely used by tropical gardeners. The leaves vary in form, some being flat and others undulating, while the flowers are inconspicuous. All Acalypha species require full sun, well-drained soil, and careful pruning to prevent them from becoming leggy. Makes a dramatic addition to container plantings and ideal for training into a standard. This member of the Spurge Family (Euphorbiaceae) needs heat, humidity, and sun to flourish. Acalypha ‘Lava Flow’ (Copperleaf) – As part of the Tiki™ series of Acalypha, this hybrid copperleaf smolders and glows in the garden. It has large, flat leaves that look as if they are made of melted bronze wildly splashed with vivid orange, red, gold, and salmon. Orange is a favored garden color for summer and fall combinations. Even though the flowers are insignificant, the foliage says it all. This member of the Spurge Family (Euphorbiaceae) will quickly reach 24” tall and 18” wide. Flourishes in full sun with lots of heat and humidity. Acalypha wilkesiana ‘Devappa’ (Copperleaf) – Broad, hand-sized, calico leaves with serrated edges adorn the woody branches of ‘Devappa’. This striking yellow and green form that takes on rosy tones if grown in full sun comes out of the Devappa Nursery in Bangalore, India. Give this member of the Spurge Family (Euphorbiaceae) lots of sun and it will grow into a rounded, shapely bush, reaching up to 3’ tall and wide. 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 3 Adiantum caudatum (Trailing Maidenhair Fern) – A most fascinating species of maidenhair fern with fountains of cascading and shimmering fronds. Astonishingly, mature plants produce baby plants on their frond tips that will readily root. The frond’s young growth is an attractive orange color, maturing to green; the length of the mature fronds ranges between 12” and 24” long. Grow this member of the Maidenhair Family (Pteridaceae) in moist soil under humid conditions. At its best in hanging containers or on a living wall where it can hang freely. Adiantum caudatum is native to Bangladesh, Burma, India, Nepal, Philippines, Thailand, and China. This Zone 7b-10 fern is little known and almost hardy in the Delaware Valley. If you are a zone buster, give it a try by overwintering outside in a sheltered area. Once your plant is mature you should have plenty of experimental plants to attempt this. Otherwise, treat as a houseplant. Aechmea blanchetiana (Living Vase Bromeliad) – A spectacular, highly colorful species of bromeliad, it is native to the tropics of Brazil where it grows both terrestrially and epiphytically. This vase-shaped plant sports colorful leaves ranging from reddish-gold, orangish-gold, gold, and greenish-yellow, depending upon the amount of sunlight it receives. Grow in very bright light and it will take on glowing orange hues that literally light up the landscape. A fiery red branched flower spike rises out of the vase, high above the foliage, and then gives way to orange berries. Quite a large species if allowed to mature over several years, it will reach 4’ high and about as wide. Full sun is best for developing its intense color. Provide this member of the Pineapple Family (Bromeliaceae) with well-drained soil and average watering. For additional information on bromeliads, see listing: Bromeliads. Aechmea ‘Frappuccino’ (Living Vase Bromeliad) – This stately bromeliad has wide, strappy, upright, copper-colored leaves with white striations that appear to be covered with a light dusting of powder. The leaves have backward-curving spines that can be painful, so be careful how you handle the plant. The long-lasting flower spike consists of branched bracts that are dark orange tipped in yellow from which emerge small purple flowers. A magnificent hybrid from Bullis Bromeliads in South Florida with the characteristic A. chantinii bright red and yellow bloom. A mature plant will reach 18” tall and 12” wide. Provide this member of the Pineapple Family (Bromeliaceae) with partial shade, a well-drained soil, and average watering. For additional information on bromeliads, see listing: Bromeliads. Aechmea lueddemanniana ‘Alvarez’ (Living Vase Bromeliad) – A slow, easy to grow bromeliad adding both color and boldness to the landscape or to a grouping of containerized plants. This member of the Pineapple Family (Bromeliaceae) has an open, vase-shaped rosette, maturing to 30” high and wide displaying colorful leaves variegated green and yellow. If grown in bright light, the variegation will be overlaid with a broad stripe of rosy coral-orange. The species is native to Guatemala and Honduras and requires full sun to part shade in a well-drained soil. For additional information on bromeliads, see listing: Bromeliads. Aechmea 'Malva' (Living Vase Bromeliad) – ‘Malva’ features an upright rosette of foliage, purple to eggplant in color and frosted with a silvery sheen. The inflorescence is a branching, red-flowering spike covered with bracts of bright gold. When mature it will reach 36” high and 24” across; it flourishes in a bright, filtered light. Provide this member of the Pineapple Family 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 4 (Bromeliaceae) with well-drained soil and average watering. For additional information on bromeliads, see listing: Bromeliads. Aechmea ‘Reginaldo’ (Living Vase Bromeliad) – Quite a stunning medium to large bromeliad with outstanding albo-marginated leaves (silvery grey-green with white margins) that form an open, upright rosette to nearly 24” high and 24” across. The inflorescence is a clustered head of purplish red bracts that lasts for months. Provide this member of the Pineapple Family (Bromeliaceae) with a well-drained soil and average watering. This variegated form of 'Romero' is well-suited for interior use for which it was first developed. For additional information on bromeliads, see listing: Bromeliads. Albuca spiralis ‘Frizzle Sizzle’ (Corkscrew Albuca) – What a curious little plant with its corkscrew-like leaves sprouting out of a bulbous base. `Frizzle Sizzle` is characterized by its upright plant habit; sturdy and strong growth; relatively rapid bulb development; short, spiraling leaves; and spicily fragrant flowers. A small plant, about 4” high in foliage and 8” high when in flower. The foliage is its main attraction; leaves are narrow and a deep green and at first are ascending and then coil into a tight spring. Apparently the spring is a mechanism to expose less leaf surface to the desiccating sun of its native habitat, the sand plains of Cape Province, South Africa. It's a winter grower and doesn't need much water in the summer. The star-shaped, greenish yellow flowers appear in terminal racemes. Grow this member of the Asparagus Family (Asparagaceae) as a succulent in full sun in very gritty, well-drained soil and keep dry during summer dormancy. The hotter and drier, the tighter curled the leaves. Alcantarea imperialis ‘Malbec’ (Torch Bromeliad) – A. imperialis is the most regal and is considered the signature species of the genus Alcantarea; it is one of the giants of the bromeliad family (Bromeliaceae). In the wild this terrestrial bromeliad grows to a span of more than 5’, although it can take up to ten years to get to this size. The thick flower spike reaches up to 12’ in height, producing hundreds of flowers; the spike can last up to 12 months. Along the flower spike are red bracts from which racemes of small, scented, creamy- white flowers emerge. The dark green, spineless, slightly ribbed leaves are quite leathery and tough with a distinctive waxy bloom over the surface, giving a bluish coloration from a distance. The cultivar ‘Malbec’ has the same dark green, spineless foliage but differs by having a deep burgundy/malbec red coloring on the undersides of its leaves. Expect a size of about 3’ in diameter when cultivated as a pot plant in a non-tropical environment. It enjoys basking in sunlight and can tolerate dry conditions. Alcantarea imperialis is a member of the Bromeliad Family (Bromeliaceae) and can be found growing on rocky slopes in the Organ Mountains outside Rio de Janeiro, Brazil. For additional information on bromeliads, see listing: Bromeliads. Alocasia 'Portodora' (Upright Elephant Ear) – According to Tony Avent of Plant Delights Nursery, “This hybrid of Alocasia odora ×Alocasia portei makes a stunning upright clump that is essentially an improved Alocasia macrorrhizos. Each giant, green, heavily-scalloped leaf is held sturdily upright atop a thick muscular purple stalk.” Leaf dimensions can easily reach 3’ wide by 6’ long on 6’ or longer stems. Use in containers or as a focal point in the border. As with all elephant ears, these members of the Arum Family (Araceae) grow best in full sun to bright shade in moist, rich organic soil. According to www.Plantfiles.info, it should survive in a 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 5 Zone 7 garden with the proper winter protection. Make sure your chosen spot is not soggy especially during winter as the plants rot rather easily. As fall approaches, reduce watering and cut foliage back to the ground after it has been hit by the first few frosts. Once that occurs, mulch very HEAVILY. Also recommended is some sort of barrier to reduce winter moisture. Perhaps mulch, then plastic, then mulch again for optimal protection. Remove plastic and some of the mulch once danger of frost passes in spring. Given the care mentioned above and some good fertilization, these will really take off and will make a huge impact in your garden. Alternanthera ficoidea ‘Red Fine Leaf’ (Joseph’s Coat; Parrot Leaf; Calico Plant) – The delicate texture of this foliage plant is offset by its attention grabbing texture as well as deep burgundy coloration. This particular calico plant imparts varying shades of burgundy to any container arrangement. It is a low-growing, mounding form producing thread-like leaves. If left alone it is very loose-mounding, however if pinched or clipped through the summer, it becomes a very tight mound. Contrast its fine texture with bold, large-leaved tropicals. It is perfect for brightening edges of border gardens or for use in baskets and mixed containers. Its color will glow in the garden through early spring, summer, and fall, right up until the first frost. It does produce clover-like clusters of very small, white flowers; however it is grown mainly for its colorful foliage. For a dramatic effect plant it en masse in part sun to part shade and pinch back occasionally to maintain a dense, tidy habit all summer long. This member of the Amaranth Family (Amaranthaceae) will grow up to 12” high and a bit wider; water when soil is dry to the touch. Alternanthera ‘Partytime’ (Joseph’s Coat; Parrot Leaf; Calico Plant) – The colorful foliage of ‘Partytime’ is most eye-catching. Its green, wavy leaves have shocking, hot pink streaks and blotches. Some leaves are entirely pink and others are entirely green. It is a lovely garden compliment to colorful tropicals or more subdued bedding plants. This member of the Amaranth Family (Amaranthaceae) will grow up to 12” high and a bit wider in part sun to shade; water when soil is dry to the touch. An excellent substitute for impatiens; combine with caladiums or begonias or try it in containers and hanging baskets. The species is native from Mexico to Argentina where it naturally inhabits open forests with ample precipitation. Ammi majus ‘Green Mist’ (Bishop’s Flower; False Queen Anne’s Lace; White Dill) – An elegant border filler with beautiful, lacy white flower heads that float above ferny foliage. This graceful annual creates a soft froth of blooms that associate beautifully among herbaceous perennials. The compound umbels of small, white flowers borne on slender stems are excellent for cutting, with a good vase life. The flowers are also attractive to wildlife, luring bees and butterflies to their delicate blooms. An upright grower, it reaches heights up to 50” with a spread of 20”. This member of the Carrot Family (Apiaceae) prefers full sun and a welldrained soil. CAUTION: The milky sap of this plant may cause irritation in sensitive individuals. Exercise caution when harvesting. Androlepis ‘Paradise’ (Androlepis) – This beautiful and quite rare bromeliad hybrid is primarily grown for its huge, exotic foliage and is prized among bromeliad collectors. The leathery, glossy, apple green foliage with reddish tips is armed with spines along the leaf edges, however if sited in full sun, the entire plant blushes a merlot red, particularly beautiful 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 6 as the sun rises and sets. The rosette of foliage consists of long, stiff and mostly nonarching, thick leaves. The inflorescence is an incredible, 4’ high, bright pink stalk with blush pink bracts and short racemes of ivory flowers tipped in pink; pinkish white berries will follow. It resembles a tall, erect, pink candle that blends beautifully with the wine-colored foliage. It is very tolerant of direct sun, as well as hot, dry conditions. This member of the Pineapple Family (Bromeliaceae) makes an ideal landscape specimen and matures to around 18” to 24” tall and 18” wide. For additional information on bromeliads, see listing: Bromeliads. Angelonia angustifolia Angelface®Wedgwood Blue (Summer Snap-dragon; Angelina) – This recent selection of angelina is characterized by its semi-upright and good branching form, its freely flowering habit (June through September), and its spikes of rich lavenderpurple blooms with white throats. Foliage is smooth, deep green. Does best in full sun, thrives in heat and humidity and is very drought tolerant. An outstanding plant for the “English cottage garden”, mixed borders, raised beds, or in large containers. Most effective when planted in large groupings. Will grow 18” to 24” high and 12” to 18” wide in any free-draining, organic soil. This member of the Plantain Family (Plantaginaceae) attracts butterflies and hummingbirds. Anigozanthos ‘Big Roo Orange’ (Kangaroo Paw) – Kangaroo Paw is the common name for a group of Australian rhizomatous perennials in the Bloodwort Family (Haemodoraceae). Its compact, upright and outwardly spreading habit with green, strap-like foliage gives way to 36” architectural spikes of well-branched inflorescences. These branching stems are covered with fuzzy, bright orange, upright, tubular flowers. Because the fuzz is on the outside of the calyx, it remains showy for weeks after the flowers fade. A plant that requires hot, dry sites in full sun; water occasionally; attracts butterflies as well as hummingbirds. Mature height to around 18” high with a spread of 18” wide. Extraordinarily unique and surprisingly easy to grow. Anisodontea × hypomandarum (Cape Mallow) – This South African shrub grows quickly into a rounded shape about 4 feet tall and wide, with small, lobed, bright green leaves. Notable for its profuse production of inch-wide, dark-veined, vivid pink blooms with purple eyes which resemble miniature hollyhocks; flowers come throughout warm weather, yearround in mildest climates. Site in borders or grow in large containers; it is sometimes sold as a single-trunk standard or “patio tree.” This fast-growing shrub with dark green, aromatic foliage is a member of the Mallow Family (Malvaceae) and does best when planted in full sun in welldrained soil. It becomes most lush with occasional watering even though it is reasonably drought tolerant once established. Antirrhinum hispanicum (Spanish Snapdragon; Little Dragon) – This amazing deer-resistant snapdragon is endemic to the hot, sunny plains of Spain. Antirrhinum hispanicum makes an 8” to 12” tall by 12” to 24” wide clump of fuzzy, silvery grayish green leaves, topped all summer long with spikes of pink and yellow bicolor flowers. As stated by Tony Avent of Plant Delights Nursery, “It thrives in our hot, humid summers where most snapdragons fear to tread.” This member of the snapdragon family (Scrophulariaceae) needs full sun in a very well-drained soil. Combine with echeverias and sedums in a rockery, along a wall or pathway or plant in low containers. 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 7 Argyreia nervosa (Hawaiian Woodrose; Elephant Creeper; Wooly Morning Glory) – This beautiful, ornamental climbing vine, reaching 25’ or more, is grown mainly for its extraordinary textural foliage. The dark green, heart-shaped leaves are up to 12” wide and a dense, white down covers both young stems and leaf undersides. Tight clusters of trumpet-shaped, purplish pink flowers, about 2” across on pedicels to 6” long, appear among the foliage of mature plants all summer into fall. The fruits mature into flower-like structures with the texture of soft wood, hence one of its common names. These pods house large furry seeds which contain the psychedelic drug, ergine, also known as d-lysergic acid amide (LSA). This vigorous twiner, is native to eastern India and Bangladesh, where it is used medicinally. It needs a strong support to grow on; allow it to scramble up a tree, over an arbor or tall post, or keep trimmed to a mound-like form. Site this member of the Morning Glory Family (Convolvulaceae) in full sun to part shade in any moist, well-drained soil. Aristolochia grandiflora (Pelican Flower; Giant Dutchman's Pipe.) – This extraordinary Aristolochia vine has one of the largest flowers of any New World species and deserves its name grandiflora (large flower). Flowers are heart-shaped with a pouch and are 12” long, 4”8” wide with tails that are up to 24” long. The flower is green/white with purple/brown veins. The center of the flower is darker, attracting pollinators along with the distinctive odor of its reproductive elements. Each flower lasts for two days. On the first day it is in the female phase, attracting flies by its foul smell, similar to that of rotting meat. The flies are trapped by the downward facing hairs in the pouch of the flower to ensure pollination. On the next day, the flower changes to male phase and pollen is deposited on the pollinators, the odor disappears, the hairs wither and the insects are released. A fast-growing vine that can grow 15’ to 20’ tall with support. It has deeply cordate, green, triangular leaves. This member of the Birthwort Family (Aristolochiaceae) is native to the Caribbean and Central America, and has been introduced to Florida in the United States as an attractor of butterflies. Asclepias curassavica ‘Orange Form’ (Orange Bloodflower; Mexican Butterflyweed) – An orange form of the South American bloodflower that is prized for attracting butterflies into the garden. Growing 3’ to 4’ tall by about as wide, this Asclepias has narrow, 6” long, pale green, lance-shaped leaves. The flowers, appearing in late spring thru late fall, are on long stems bearing 3” to 4” wide vivid orange and gold clusters of tiny, star-shaped flowers which are followed by 3” long, spindle-shaped seedpods that produce viable seed. Plant in full sun in any moist, well-drained soil. This species differs from most Asclepias where A. curassavica prefers moist locations. Pinch out the tops of plants to induce a bushy habit and more flowering branches. The long stems make excellent cut flowers. An outstanding hummingbird and butterfly nectar plant, it attracts Monarch butterflies as an egg-laying host since it is the sole food source for Monarch caterpillars. Cut back this member of the Milkweed Family (Asclepiadaceae) in the fall after all caterpillars have departed. It is native to South America, but has naturalized worldwide in many tropical and subtropical areas. Asplenium bulbiferum (Mother Fern; Hen and Chicken Fern) – This unique fern is called the Mother Fern because it produces plantlets on the tops of its leaves. Once they have grown to about 2”, these offsprings fall off and, provided the soil they land in is kept moist, develop a root system and grow into new ferns. Mother Fern will reach about 2’ tall by 3’ to 4’ wide with arching fronds of light-green and black stems. The fronds bear leaflets that are finely cut two 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 8 to three times. This fern commonly grows in most bush areas in New Zealand. It thrives in many situations from shade to partial sunlight, and is also suitable and popular as an indoor plant. Provide this member of the Spleenwort Family (Aspleniaceae) with moist, well-drained soil. Asplenium ‘Austral Gem’ (Austral Fern; Lace Fern) – This new, sterile cultivar has thick yet delicate, lacy fronds that are so glossy that they look fake! The dark green, feathery fronds are held on sturdy stems with a thick, waxy cuticle that prevents them from drying out. It suffers no ill effects from summering outdoors in hot temperatures and windy conditions, and it is just as great as an indoor plant, being resistant to the drying effects of heated and airconditioned spaces; since it is sterile, it does not drop messy spores. This Australian introduction is hardy in zones 9 to 11, where it’s grown in wooded and shady gardens. Grow in a hanging basket or a container set upon a pedestal or plant stand. Use it as a focal point or mix with other containers. Give ‘Austral Gem’ bright indirect light to shady locations. Water thoroughly when the soil starts to dry. This member of the Spleenwort Family (Aspleniaceae) will grow to around 20” high and about 24” wide. Austral fern is a hybrid, known botanically as: Asplenium (Asplenium dimorphum x A. difforme) Austral Gem™ = 'Austral Gem'. Basella rubra (Malabar Spinach, Climbing Spinach, Red Ceylon Spinach) – A tasty alternative to traditional spinach, this gorgeous combination of deep green leaves set against burgundy stems and violet blooms seems right at home in your border. Young leaves can be cooked and added to recipes and fresh leaves make great salads, however this annual vine is not true spinach. It creeps when temperatures are cool, but leaps when the mercury hits 90º F growing to 10’ or more. Basella rubra is a lovely vine for trellises, arbors, and hanging baskets in full sun and rich, moisture retentive soils. This member of the Basella Family (Basellaceae) is native to tropical Asia and widely cultivated around the world. BEGONIAS are succulent herbs from the tropics and were introduced into England in 1777. Since then begonias have been “improved upon” so rapidly there are thousands of variations now in cultivation, displaying the most gorgeous colorations not only in their flowers but also in their leaves. There are over 1,000 species, mostly in the genus Begonia and over 10,000 cultivated begonias. The geographical distribution of the Begonia Family (Begoniaceae) is widespread; being indigenous to Mexico, Central and South America, Asia and South Africa. It is extremely difficult to classify begonias into neat, tidy groups. Over the years, begonia growers have evolved a type of classification that seems to work well in everyday use. Plants are grouped according to their appearance or growing habit. Rex: These rhizomatous plants are kings of the begonia world, displaying wildly varied leaves – streaked, bordered, spotted and splotched by many colors; usually the flowers are overshadowed by the striking foliage. Cane: Popular plants for many years; probably grown by your grandmother who called them "angel wing" begonias. Canes come in varying sizes but they all have the tough stems with a bamboo-like appearance. 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 9 Shrub: Upright growers on branching stems. Some have hairy, velvety leaves while others are distinguished by colorful foliage seldom seen anywhere else. Rhizomatous: Easy care with interesting foliage and flower clusters growing like clouds above the foliage, sometimes covering the entire plant, i.e. beefsteak types. Semperflorens: The most widely grown begonia and in some parts of the country called "wax type" because of the waxy look to the leaves. All are ever-blooming with flowers in shades of red, pink and white; popular as bedding plants. Tuberous: Very popular around the world as a bedding plant and as a greenhouse plant. Grown for their small to dinner-plate-size flowers. A few varieties and species have interesting leaves and growth habit. Trailing: Grown mostly for their trailing habit, they put on a spectacular show of flowers, usually in the spring. Some of the newer varieties have a longer blooming period or are even ever-blooming. Thick‐stemmed: Not as widely grown but come in various forms, all having very thick, almost tree-like stems with many growing very tall, some as high as a house! Most thick‐stemmed types branch infrequently but send up new growth from the base. Culture of begonias: 1. Give all begonias the bright sunlight of an eastern or southern window. For begonias grown for their foliage, such as rex begonias, the light should not be direct, but rather filtered or shaded by a tree outside the window. 2. Provide a stable temperature for begonias. Begonias are sensitive to rapid fluctuations in temperature and therefore must be kept away from drafts. As long as the temperature is constant and above 60º F begonias can thrive. 3. Water begonias between once a week and once every two weeks. You must take care not to over water a begonia or it may rot. Monitor the dampness of the potting mix by sticking your finger into the potting mix; if dry it is time to water. 4. Keep begonias in small pots. Begonias have small root systems and do not need repotting frequently. However, every spring pull the root ball out of the pot and check to see if the roots have completely wrapped around the bottom of the pot. If they have, upgrade the begonia plant to the next size pot. 5. Move flowering begonias outside during the spring, summer and fall months if you can create the right conditions for them. Flowering begonias enjoy a shady porch as long as the temperature does not fall below 60º F. Begonias growing outside need more frequent watering, so take care to check the soil often. 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 10 Begonia boliviensis ‘Bonfire’ (Tuberous Begonia) – A dynamite plant both in color and habit, ‘Bonfire’ is an easy-care, long-blooming patio or indoor plant. The slender, fluted, bright orange flowers have four long, curved petals and the medium green, red-edged, serrated foliage drapes beautifully over the side of a container. The blossoms make a striking color combination with the burgundies or purples of companion plants. Best of all, this begonia can handle the humidity and heat of the summer garden. ‘Bonfire’ blooms non-stop during the summer months with no deadheading required. Originating in the Bolivian Andes, B. boliviensis is a low-maintenance, fast-growing species that needs bright light, well-drained soil, and steady fertilization over the growing season; it does not like wet feet. Will reach 12” to 20” high in a container. Begonia Dragonwing® Red (Anglewing Begonia) – The Dragonwing® begonia series are hybrids between wax begonias and angelwing begonias, featuring angelwing-like, shiny green leaves and large drooping scarlet flowers. It is a compact, bushy, fibrous-rooted plant that typically forms dense mounds to 15” to 18” tall and about as wide with fleshy, semi-trailing stems. It is a superb annual for shaded areas, and because this hybrid is sterile, it just keeps blooming from spring till frost (May to October). With its unique and beautiful arching, pendulous habit, this spectacular plant adapts well to hanging baskets, window boxes, large containers and in-ground plantings. Plant it as an accent or in edging shade garden. Begonia ‘Golden Glow’ (Rhizomatous Begonia) – The bright lime-yellow foliage of ‘Golden Glow’ is a beacon of light in a dark room, but to maintain this brilliant color it does need bright light. Light pink flower spikes compliment this unusual begonia in late winter. A good tight clumper with slightly wavy, star-shaped, small leaves. Begonia luxurians (Cane Begonia) – An unusual species from the rain forests of Brazil that looks more like a palm tree than a begonia. This upright-growing plant with tall, rigid stems that support decorative, palmate leaves presents a great tropical look. The drooping leaves emerge in an alternating, zigzag pattern and each leaf with coppery undersides consists of 11 to 15 leaflets radiating out from its reddish center. After many years and after repotting into larger containers it can grow 8’ to 10’ tall. Clusters of flowers containing dozens of pretty, white and yellow blooms appear in spring from the tops of the branches. Tall, regal, and impressive. Begonia ‘Wineuma’ (Rhizomatous Begonia) – Hugh, swirling, light to mid-green leaves which are curled like seashells are tinted with burgundy with a stronger tint along their edges. With age, the leaves of this plant become huge. Begonia 'Wineuma' rarely flowers. It makes a great houseplant, requiring a bright room with indirect sunlight and high humidity. Outside in containers, Begonia 'Wineuma' tolerates high heat and direct sun if it has enough water. Has a mounding habit reaching 15” to 18” high and 18” wide. Billbergia ‘Hallelujah’ (Queen’s Tears; Summer Torch) – A bromeliad grown more for its colorful foliage than for its flowers. Although the red, white, and blue blooms are showy enough, it's the stunning purple-pink leaves spattered with creamy white blotches and speckles that attract everyone's attention. Laden with spines along the leaf margins, this 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 11 member of the Bromeliad Family (Bromeliaceae) glows colorfully in sunlight and is extremely prolific in the production of offsets with the mother retaining her good looks well into old age. For additional information on bromeliads, see listing: Bromeliads. Blechnum brasiliense ‘Crispum’ (Red Leaf Tree Fern) – Considered a botanical oddity, new fronds emerge blood red from translucent red fiddleheads and eventually fade to a glossy, deep green with elegantly ruffled, wavy margins. This slow-growing form, like other tree ferns, will eventually develop a "trunk" from which fronds emerge. It is a slow-growing fern that will eventually form a trunk and top out at about 3’ to 4’ tall. Grow outdoors in summer in bright, indirect light or direct morning sun for best coloration and compactness. To overwinter keep the plant on the dry side of moist as it will not appreciate being kept wet or cold; it requires a bright site with some humidity. This fern is a member of the Blechnum Family (Blechnaceae) and is native to the tropical forests of Brazil and Peru. Brillantaisia ulugurica (Giant Salvia) – Even though its common name is giant salvia, it is not salvia but a member of the Acanthus Family (Acanthaceae) and comes from tropical Africa. In bloom from early summer until the end of autumn, the long flower stalks are topped with dramatic panicles of large, orchid-shaped flowers, each with a speckled, claw-like, pale lilac upper petal and a large purple-blue lower lip. It has huge, lush leaves and fleshy, squaresided stems. Giant salvia grows quickly in a sunny position with good soil that doesn’t dry out and is best sited at the back of flower borders, where surrounding shrubs can support its tall stems; it may benefit from staking since it may become top heavy after rain. It will reach anywhere from 4’ to 7’ tall if given lots of heat, sun, and humidity (sounds like the summer climate of SE Pennsylvania). Remove the spent flower spikes and new ones will form. BROMELIADS belong to the plant family, Bromeliaceae, which encompasses over 3,100 species plus thousands of hybrids. With one exception (Pitcairnia feliciana of tropical West Africa), all are native to the Americas. You will find them growing from the southern part of the United States throughout the Americas and all the way south to Chile and Argentina. Spanish moss and ball moss are bromeliads found across a very wide range, but the pineapple is the most familiar bromeliad. In nature many bromeliads grow on trees as epiphytes. Their roots are used mainly for support. While many bromeliads grow on trees, many others grow in the ground, on rocks, or on cliff faces. They are remarkably versatile, and form one of the most adaptable plant families in the world. They have a tremendous ability to survive, and can offer infinite variety, challenge, exciting plant forms, and color combinations. Once a mature bromeliad rosette flowers and fruits, it slowly dies; mature plants perpetuate themselves by creating pups or offsets. As the mother plant slowly dies, the offsets grow and in nature eventually take over the space occupied by the mother plant. Offsets can be carefully removed, some species require a knife, other species only a gentle touch; transplant into a new container. Generally, they prosper at temperatures between 50°F and 90°F in very welldrained soil and bright light. They are not winter hardy except in subtropical and tropical regions. Genera we will be selling in 2015 include: Aechmea, Billbergia, Cryptanthus, Dyckia, Neoregelia, Tillandsia, and Vriesea. Browallia americana (Amethyst Flower; Bush Violet) – What’s ever-blooming and blue for bright shade? This little known, easy to grow, South American annual with bright, true-blue 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 12 flowers dotted by striking, white eyes. Fast-growing to a multi-branching, 2’ tall and 20” wide bushy plant of deep green foliage, this powerhouse pumps out a constant supply of 1-1/2”, delightfully cartoonish flowers from June until early October. Adaptable to sun or shade, it’s a welcome change (or addition) to edging your beds, or tumbling out of mixed plant containers where it will happily co-mingle with the surrounding plants. Bluest flower color is achieved in bright shade. This member of the Nightshade Family (Solanaceae) thrives in moist, rich, welldrained soils in full sun to bright shade. BRUGMANSIA (Angel's Trumpet; Brugmansia) is a genus of five species of shrubs and small trees, all native to South America, that turn heads with their enormous, luminous, often fragrant, trumpet-shaped flowers. The blooms, which hang from the branches like fluted bells, open in waves all summer and perfume warm evenings with their sweet scent. Brugmansias are large (to 12 ft.), woody shrubs that can be trained into small trees with typically pendant blooms and bean-shaped seedpods. With their oversize leaves and big, tubular flowers that bloom mainly in summer and fall, they are imposing plants. Grown in a large container, these plants lend grace and distinction that never fails to inspire, or plunge them into borders for that “tropicalia” effect. Given full sun or partial shade and plenty of water, they grow quickly to 36”48” the first year. Angel’s trumpets are heavy feeders so give moderate to heavy levels of fertilizer. They are easily over-wintered indoors for a splendid show the following summer. All parts of these members of the Nightshade Family (Solanaceae) are poisonous. Brugmansia is named after Sebald Justin Brugmans (1763-1819). Even though Brugmansia has been in the USA for many years, it has always been portrayed as a "Plant of Evil" and something undesirable to have growing in your garden. Not until 1997 did Brugmansia begin to gain the "serious" attention of many American plant collectors and home gardeners. Brugmansia × candida – This hybrid angel’s trumpet is a tropical shrub or tree that typically matures to 5’ to 10’ tall and features huge, white, nodding, trumpet-shaped flowers (to 12” long) from mid-summer to fall. Flowers emit a strong fragrance in evenings and the ovate to oblong leaves reach up to 8” long. In the first year, plants will typically grow to 3’ tall with minimal flowering. In the second year, plants will grow taller with more profuse flowering. Brugmansia × candida is a hybrid between Brugmansia aurea and Brugmansia versicolor. B. × candida is a "natural” hybrid and is found growing wild in the Andes, where it grows on sloping terrain under damp conditions. Brugmansia 'Charles Grimaldi’ – Named after the late Charles Grimaldi, a California landscape designer, this beauty has exceptionally large (up to 15”), fragrant, luminous, salmon-yellow flowers with recurved petals that are covered with fine hairs. The very large green leaves have distinctly toothed margins. May reach 8’ to 12’ in height and 6’ to 10’ wide in several years. Brugmansia ‘Equador Pink’ – Produces flushes of very long (10” to 12”), deep-pink trumpets that turn their fluted edges up after dark, exuding a potent fragrance. A naturally occurring hybrid discovered in Ecuador. Very floriferous and will bloom as a relatively small plant. The blooms are a very unique clear, strong pink that opens cream and darkens to pink all on the same day. 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 13 Brugmansia ‘Jamaican Yellow’ – Pendant, luminous, lemon-yellow flowers are 8” to 10” long and have a spicy-sweet fragrance, blooming all summer into fall. Very free flowering, this compactly growing plant will reach 3’ to 6' high and about as wide; it is a smaller variety which is well-suited for containers. Burle Baskets and Burle Balls – Lush hanging forms filled with tropicals and named “Burle” after the renowned Brazilian landscape architect Roberto Burle-Marx. These forms are a creative way to make an impressive, three-dimensional impact with tropical plants. The base of the structure is a wire frame. The frame is filled with sphagnum moss, followed by a moisture-retaining soil, and then planted bottom, sides, and top with a variety of tropical plants. Voila, an instant visual! CALADIUM (Caladium) is a tuber-rooted tropical perennial grown for its large and showy leaves. Caladiums have no stems; the leaves are borne on long, 6” to 12”, petioles (leaf stems) that arise directly from the underground tuber. The petioles are attached to the leaves near the center, rather than at one end, a condition called peltate. Leaf shape, size, and color vary among the hundreds of selections, but most are heart; lance, or arrowhead shaped, 6” to 14” long, and variously spotted or streaked with pink, red, gray, or white. Caladiums also bloom, but the flowers are insignificant; they drain energy from the plant, and should be pinched off as soon as possible. The caladium inflorescence is a 9” greenish-white, Jack-inthe-pulpit-like spadix and spathe. (The spadix is the fleshy upright spike with tiny flowers on it = Jack; and the spathe is the hood-like bract that surrounds the spadix = the pulpit.) Small white berries eventually develop on the spadix. By the end of its growing season, caladiums are about 2’. tall and 2’ wide. All parts of this tropical plant are poisonous, so caution is advised around children. Caladium ‘Miss Muffet’ – Miss Muffet's beauty comes from her chartreuse leaves with creamy white centers covered with red spots with red veins beneath; a combination that is both enchanting and eye-catching. Occasionally the red veins will bleed into the lime green background for more contrasting color. Miss Muffet is a petite selection with a slightly upright, even, and bushy habit reaching only 10” to 14” tall. Plant this caladium in full sun for a pale yellow leaf or in shade for a greener leaf; it is a sun tolerant caladium. Calopsis paniculata (Calopsis; Restio) – A tall, reed-like plant with bright green leaves and stems reaching a height of 3’ to 4’ and a spread of 3’. It bears clusters of brown grass-like flowers at the terminal ends of the stems in fall. The stems arise from the a strong underground rhizome with the lower parts of the stem looking somewhat bamboo-like. Calopsis is an attractive waterside plant which is normally found growing in moist, welldrained soils along stream banks in southwestern South Africa. This restio is a member of the Restio Family (Restionaceae) and is at home in full sun with its roots in moist soil, forming a wonderful lush green backdrop to your water garden. CANNA (Canna, Canna Lily) – Tropical and subtropical flowering plants that are grown as annuals in cooler regions where they add an instant touch of the tropics. Cannas are often grown for their foliage alone. The large, paddle-like foliage resembles banana leaves and comes in greens, blue-greens, variegations, and stripes. Much hybridizing has been done to 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 14 create flowers that are more attractive. The gladiolus-like flowers come in shades and combinations of yellow, orange, red, and pink. Favored by hummingbirds, the flowers are borne in terminal racemes on tall stalks emerging from the foliage. Cannas cannot help but be focal points; a single specimen can anchor a bed or planted in a mass they look both tropical and Victorian. Their colors and tropical feel combine well with other ‘hot’ colors. Prefer rich, moist soil and full sun; may also be grown in poorly drained areas and in shallow ponds; however, surprisingly drought-tolerant. Cannas are heavy feeders and grow quickly in our summer heat. A member of the Canna Family (Cannaceae) and native from tropical to warm temperate America. All of the cannas we will be selling are virus indexed and clean. Canna ‘Grande’ – Jurassic clumps of handsome, wide, elliptical leaves bordered in a wash of burgundy emerge from deep bronze stems and rise to 10’ or more, appearing more like a banana than a canna. Small specie-type red flowers appear later in the season but the reason to grow it is for the utter boldness it creates in a mixed border. Canna ‘Pretoria’ – Imported from India in 1963 by Glasshouse Works, ‘Pretoria’ is considered to be the most beautiful of all canna lilies. The dramatic stalks of green and yellow striped variegated leaves with brilliant maroon margins grow to 6' high and are topped in summer with bright orange flowers with a crumpled silk appearance. Synonymous with ‘Bengal Tiger’ Canna ‘Sky Hawk’ – A fantastic giant with a strong structure, reaching 6” to 10’ tall. The large, rounded, dark chocolate to deep plum-colored leaves with a fine maroon margin contrast magnificently with its intense coral pink flowers. Canna Tropicanna® – As Tony Avent (owner, Plant Delights Nursery) states, “Tropicanna® is the peak in shock gardening”. This canna was introduced by Jan Potgeiter of South Africa and even without flowers you would surely grow this stunner. Tall, 7’ stems are crowned by shocking, bright orange flower heads summer to fall, but it’s the exotic foliage that adds the interest. Emerging bright burgundy, leaves mature with stripes of red, pink, yellow, and green. This dramatic specimen provides bold color and lush texture to garden beds, or as featured container specimens, “enough to get your friends talking and hummingbirds darting.” – Tony Avent. Cestrum ‘Orange Peel’ (Jessamine) – This living bouquet of pure orange blossoms brings floral splendor to the garden and offers a sweet scent at sunset. The fast-growing woody stems are clothed in glossy green, lance-shaped foliage and adorned with terminal clusters of mustard-orange flowers tipped in yellow.....a hummingbird and butterfly delight. This low maintenance, deer-resistant shrub, reaches 3’ to 5’ tall and wide and thrives in the summer heat in full sun in moist, well-drained soil. Attractive in mixed borders, or site near an outdoor terrace that is frequented in the evening so that one can enjoy the emitted fragrance of its flowers; the blossoms are fragrant from sundown to daybreak. ‘Orange Peel’ is a hybrid and was developed by crossing day-flowering jessamine (Cestrum diurnum) with the nightjessamine (C. nocturnum). This woody evergreen shrub is related to the potato and is a member of the Nightshade Family (Solanaceae). Treat as an annual during the summer 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 15 months and bring inside where it will bloom during the winter, especially if kept at a temperature between 70 and 80 degrees and given full sun. Chondropetalum tectorum ((African Cape Rush) – This rich, dark green South African native is truly sculptural. A clumping reed-like plant, it has chocolate-brown bands (bracts) along the length of its green stems and is topped by clusters of small, long-lasting brown flowers. This stylish combination then gracefully bends from its erect center. Found in marshes in South Africa (where it is used for roof thatching) it can also take drought conditions once established. This dazzling and handsome accent plant is a long-lived member of the Restio Family (Restionaceae). Cissus discolor (Rex Begonia Vine) – This is one tropical vine too exotic to resist! Native to Cambodia and Java this climber bears heart-shaped foliage with pearlescent silver-toned patterns atop green leaves with contrasting burgundy coloration beneath. Climbs via tendrils and is easily grown on arbors, trellises or even trees, reaching heights of 5’ to 6’. Site in a container and allow to cascade over the sides or to climb an inserted tuteur. Provide bright indirect light and well-drained soil with moderate water. Member of the Grape Family (Vitaceae). COLOCASIA (Elephant Ear; Colocasia) – Native to tropical Asia and Polynesia these herbaceous perennial plants have a large tuber on or just below the ground surface. The large to extremely large (8” to 60” long) leaves resemble elephant’s ears not only in size and shape but in the way they droop downward from the tops of their tall stems. The leaf stems arise directly from the ground to form impressive clumps of lush foliage. Leaf coloration ranges from plain bright apple-green to black as well as some marked with colorful patterns and colorful stems. May be planted in the ground or in large containers in full sun to bright part shade in fertile, humusy, organically rich, and moist to boggy soil. Hint: the height seems to have everything to do with the richness of the soil and the available moisture. Colocasia tubers can be stored for replanting in the spring. First, allow frost to kill the top of the plant then cut back the stems and dig up the tubers. Wash off any soil and then allow the tubers to dry. Wrap dry tubers in newspapers or pack them in peat moss. Label each tuber or group of tubers and store in a dark, cool (35 to 45° F) place; do not allow tubers to freeze. This genus is a member of the Arum Family (Araceae). Colocasia esculenta ‘Fontanesii’ – Truly a spectacular plant with its giant, purplish black petioles (stems) that rise up to 7’ in height. At the end of each petiole sits a giant (to 3’ long), deep olive green, heart-shaped leaf with a sparkling, metallic sheen. In late summer, the plant produces wonderful 12” long, yellow, aroid-type flowers with the fragrance of papayas. Colocasia esculenta 'Illustris' – Large, almost-black, heart-shaped leaves up to 2’ long have dramatically contrasting lime-green major veins and margins. The downward-pointing leaf tips unfurl at the ends of stout purplish black stalks. By providing rich soil and adequate moisture, ‘Illustris’ should grow 4’ to 6’ tall and 3’ to 4’ wide. Coprosma ‘Evening Glow’ (Mirror Plant) – A very colorful evergreen with striking variegated foliage, upright growing, and reaching 2’ to 4’ tall and 2’ wide. The small ovate leaves are green with irregular yellow blotches that turn bright orange-red in late summer and fall and 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 16 remain that way until new growth commences in the spring. Flowers are inconspicuous. Plant in full sun to light shade in moderately well-drained soil. This tender ornamental shrub is grown primarily as an annual accent plant, however if desired, it may be brought in and treated as a houseplant over the winter months. It is low-maintenance, easy-to-grow, and deer-resistant. ‘Evening Glow’ is ideal for mixed borders, beds, combinations, rock garden and mixed containers. This colorful shrub of New Zealand parentage is a member of the Coffee or Madder Family (Rubiaceae) and was introduced by Richard Ware of Napier, New Zealand. Cordyline ‘Electra’ (Ti Plant; Cordyline) – Get Electrified! Cordyline ‘Electra’ spends its life in the fast lane. From its juvenile state to full maturity its intense, loud colors persist, displaying an overall appearance of glowing burgundy-red which consists of deep plums edged in vivid magentas. Leaves are held on a woody trunk. This mid-sized cordyline, a member of the Asparagus Family (Asparagaceae), will grow to 4’ to 5’ high, is easy to care for, and is tolerant of both over- and under-watering. Grow in a moist, well-drained soil in full to partial sun. Treat as a houseplant during the winter months. Cryptanthus bivittatus var. atropurpureus ‘Ruby’ (Earth Star Bromeliad; Cryptanthus) – This earth star is noted for its beautiful red leaves. If grown in bright light to part sun it will show off its deep ruby red leaves with dark bronze-red margins and a bronze-red stripe down the middle. This is a smaller Cryptanthus that will grow 3” to 4” across. White flowers appear in the center of the rosette. Like many bromeliads, it will flower only once and is followed by an offset of "pups," multiplying quickly creating large clusters. Cryptanthus like loamy, fast draining soil and moderate to warm temperatures, and are ideal choices for containers, living walls, and terrariums. This popularly grown species is a member of the Bromeliad Family (Bromeliaceae) and is native to Brazil. The Latin name means "hidden" (crypt) and "flower" (anthus). For additional information on bromeliads, see listing: Bromeliads. Cuphea micropetala (Candy Corn Cuphea; Giant Cigar Plant) – A small shrubby evergreen perennial that grows to 1’ to 3’ tall and 1’ to 2’ wide with narrow, penstemon-like foliage clothing its red stems. The flowers are absolutely gorgeous: tube-shaped little firecrackers, 11/2” long, bi-colored orange-red shading to a yellow-green. In late summer, they are borne abundantly on the branching tips of the stems and have long exerted stamens that exude a slightly sticky substance that makes the inside of the flower glisten. Clumps spread outwards by rhizomes. Plant in light shade to full sun with regular to occasional irrigation. It is hardy and evergreen to about 25 - 30° F but probably root hardy to at least 15° F. A great plant for fall color as it displays the oranges and reds associated with the harvest season. This is another tropical or sub-tropical plant that acts as a "returning perennial" in mild, but frost prone climates. Giant Cigar typically flowers in late summer and fall, just in time for migrating hummingbirds and attractive as well to butterflies. Moderately drought-tolerant once well established. A native of Mexico, this candy corn cuphea is a member of the Loosestrife Family (Lythraceae). Cussonia paniculata subsp. sinuata (Mountain Cabbage Tree) – The evergreen mountain cabbage tree makes a beautiful focal point in the garden showing off its unusual shape, interesting gnarled bark, and stunning, large, palmate, glaucous, grey-green leaves. This 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 17 slow-growing, sparsely branched tree grows 12’ to 20’ high and 10’ to 15’ wide in the wild. The snowflake-like leaves are divided into 8 to 12 long, deeply lobed leaflets that are held away from the stems on nearly foot-long petioles. Once mature, the plant produces small yellow flowers in summer, tightly arranged on a branched inflorescence. Plant in full sun in moderately well-draining soil and irrigate occasionally to very little. Hardy to 20° F for a short duration. An interesting accent plant used for its bold attractive foliage, texture, and color that can be effective both in the dry garden or the tropical garden. It is also well suited as a potted specimen. This plant is native to South Africa where it grows to nearly 7,000’ in elevation and is often found growing out of crevices in rocks. Cussonia paniculata ssp. sinuata differs from the species in being a larger plant and having lobed leaflets. A member of the Aralia or Ivy Family (Araliaceae). Cyathea cooperi (Australian Tree Fern) – In the tropical and subtropical forests of Southeast Australia this medium- to large-sized tree fern thrives on high humidity and partial shade, growing up to 40’ in height with fronds up to 12’ long. In our climate this kind of growth is only possible under cultivation in a large greenhouse or conservatory. Planted outdoors in containers it may eventually reach 6’ high, sporting feathery, dark green fronds and an elongated trunk-like structure giving the plant the appearance of a palm tree. Humidity is essential to growing this plant well. Use it as a specimen plant in a container. Provide full sun or dappled shade and moist, fertile, well-drained soil. When grown indoors, provide bright filtered light and medium to high humidity. A member of the Tree Fern Family (Cyatheaceae). Cynara cardunculus (Cardoon) –An architectural splendor with bold texture thanks to its large, prickly, almost dagger-shaped, ghostly gray-green, arching leaves and its statuesque, vase-shaped habit. It is topped with round, purple, thistle-like flowers in midsummer. After flowering, the plants die back to the ground for a month-long rest, and then begin growing again. This member of the Sunflower Family (Asteraceae) can reach up to 6’ tall and 3’ wide. Plant in a sheltered location in full sun in fertile, well-drained soil. Excellent in mixed plantings for adding texture and contrast or site as an individual specimen. Cut and dry the flowers to add a bit of bold texture to dried arrangements. Cyperus alternifolius (Umbrella Palm) -- Ideally suited to water gardens or poolside plantings, the compact clumps of umbrella palm are also attractive in containers or as striking specimen plantings in the garden. They can be spaced 1’ to 2’ apart in mass plantings to create a 2’ tall ground cover of fine texture. Features a grass-like clump of triangular green stems typically growing to 2’ to 3’ tall. Each stem is topped by a whorl of 10 - 25 drooping, green, leaf-like bracts that resemble the ribs of a raised umbrella. Flowers in greenish-brown clusters appear in summer in the bract axils. Grow in full sun to light shade and supply ample water. This member of the Sedge Family (Cyperaceae) is a native to Madagascar and the eastern Indian Ocean islands. Hardy to about 20 - 25° F. Cyperus papyrus King Tut® (Egyptian Papyrus) – Add some excitement to containers, borders or bogs with King Tut® papyrus, an elegant member of the Sedge Family (Cyperaceae). This exotic-looking beauty has a fantastic bold form and strong appeal. It forms a grass-like clump of triangular green stems that rise up from thick, woody rhizomes and become 4’ to 6’ tall and 3’ to 4’ wide. Resembling a feather duster, each stem is topped with a 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 18 dense cluster of thin, bright green, thread-like stems, each 4” to 10” in length. Greenish-brown flower clusters eventually appear, giving way to brown, nut-like fruits. King Tut® is a rapid grower that makes an impressive centerpiece in the landscape. It requires wet places like water gardens or watersides and is perfect for containers without drainage holes. This papyrus is easy to grow and untroubled by pests or diseases. Potted plants may be overwintered indoors or grown as annuals. Site in full sun to partial shade and in wet soil. The species papyrus is native to North and tropical Africa. King Tut® is part of the Cyperus papyrus Graceful Grasses® Series. Dahlia ‘Bishop of Llandaff’ (Dahlia) – Bishop of Llandaff isn't new, but rather a treasured heirloom cultivar that continues to win hearts and excel in gardens across the country. Deep purple, almost black, foliage sets off semi-double, 4”, bright scarlet-red blooms held atop long straight stems, flowering summer into late fall. This variety was named for Bishop Hughes of Llandaff (now Cardiff), Wales, UK, in 1924 and won the prestigious Award of Merit from the Royal Horticulture Society in 1928. It produces an amazing number of flowers and attracts hummingbirds. The inky foliage is outstanding even before the flower production begins. Provide full sun and rich, well-drained soil. If over-wintering indoors, lift tubers after the first frost and let dry before storing in a cool location in damp peat. Dahlias grow natively from Mexico to Colombia and are members of the Sunflower Family (Asteraceae). Growing 3’ to 4’ tall, use this long-stemmed cultivar in cut flower arrangements. Datura inoxia ‘Evening Fragrance’ (Angel’s Trumpet; Thorn Apple) – Native to Mexico and Central America, angel’s trumpet is a shrubby, sprawling, short-lived, tender perennial that usually is grown in the Delaware Valley as an annual. It grows 2’ to 3’ tall and sprawls to as much as 3’ to 6’ wide. Ovate, wavy-margined, grayish-green leaves (to 8” long) have a downy texture. ‘Evening Fragrance’ has single, upward-facing trumpets (to 8” long and 4” wide at the mouth) and emits a sweetly exotic fragrance. Flowers are white with a pale lavender edge and last but one night. Each flower will unravel in the evening to reveal a fragrant, trumpet-shaped bloom that only lasts until noon the following day. Their fragrance at night is intoxicating and in the morning some of that lovely scent lingers, before the sun warms them. Flowers will bloom intermittently from mid-summer to frost and are followed by downy, spherical fruit covered with stiff spines, hence the sometimes used common name of downy thorn apple. Plants belong to the Nightshade Family (Solanaceae) and all parts are extremely toxic. Datura is similar to Brugmansia, except the trumpets of the latter are larger, last for several days and droop downward. In the ground, plants do best in rich, humusy, well-drained soils in full sun with regular moisture. Container plants may be cut back and overwintered indoors in a sunny window. Dichondra argentea 'Silver Falls' (Silver Ponysfoot; Kidney Weed) – Allow a vertical cascade of silver stems to stream over the edge of baskets to a length of 2’ to 4’ or cover the soil in silvery shimmer when planted as a summer groundcover. This is one of those plants you can think of a million things to do with. And there’s hardly a plant that wouldn’t look beautiful combined with it. The creeping stems are covered with small, heart- or kidneyshaped leaves. Growing 6 to12” tall and up to 6’ wide, it may be slow to start but once it gets settled in, it will take off. Since it is a native to the desert regions of the southwestern US, it 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 19 enjoys sun and drought. This member of the Morning Glory Family (Convolvulaceae) will root along at the stem nodes, likes well-drained soil, and tolerates heat. Dichorisandra thyrsiflora (Blue Ginger) – This tropical plant which resembles ginger in growth and habit is actually related to the spiderworts (the genus Tradescantia). Blue ginger is native to the tropical woodlands of Brazil and is a member of the Spiderwort Family, Commelinaceae. Cultivated for their handsome spotted stems, large shiny foliage which is held horizontally and surmounted by clusters of striking blue flowers. This beautiful upright grower brings weeks of color to the containerized garden throughout the fall, just when many summer bloomers are finished. The deep, royal blue and white-striped flowers form large 8” clusters at the terminal end of erect stems. Individual flowers within each cluster are 1/2 inch across and have 3 petals, 3 sepals, bright yellow stamens, and a central white "eye". It is best grown in partial shade in moist, well-drained soil, sheltered from hot afternoon sun in summer and protected from strong winds that can damage the tall stems. Dicliptera suberecta (Uruguayan Firecracker Plant; King’s Crown) – An ultimate hummingbird magnet and a must-have summer through fall bloomer! From Uruguay comes this amazingly durable and long-blooming, heat, humidity, and drought tolerant tender perennial that features ovate, velvety, bluish-gray, and hairy leaves (to 2-1/2" long) and twolipped, tubular, reddish orange flowers (1-3/4" long). It makes a great textural and foliar addition to your garden even before the flower show begins. Easily grown in average, medium, well-drained soil in full sun and will tolerate some light shade and drought. Native to Uruguay and Argentina, this member of the Acanthus Family (Acanthaceae) typically grows in a shrubby mound reaching 18” to 24" tall and about as wide. Duranta erecta ‘Geisha Girl’ (Golden Dew Drop; Pigeon Berry) – Glistening violet-purple flowers drape in clusters from terminal ends of the branches of this rounded, bushy shrub; the blooms have a slight vanilla scent and are defined by light lavender edges. Orange-yellow berries follow the flowers, giving it the common name Golden Dew Drop. The cultivar 'Geisha Girl,' as the name suggests, originated in Japan and will become a shrub or small tree; however, in the Delaware Valley you should treat it as an annual and expect it to grow no larger than a few feet. ‘Geisha Girl’ is very easy to grow, preferring full sun in well-drained soil; the small blooms will attract butterflies to your garden. The species is native to Central and South America as well as the Caribbean and belongs to the Verbena Family (Verbenaceae). Dyckia ‘Burgundy Ice’ (Saw Blade; Dyckia) – Dyckias are those members of the Pineapple Family (Bromeliaceae) which inhabit the dry, sunny, rocky terrain of South America; they are extremely tough, surviving long periods without water and will take temperatures down to 20º F. ‘Burgundy Ice’ is a gorgeous new hybrid that exhibits stiff, glistening, dark burgundy leaves lined with decorative, stark-white teeth and forming a spidery rosette that eventually multiplies into a large cluster of plants. Nearly all dyckias are clump-forming and are invariably left to grow this way as they are quite prickly to the touch. Each rosette will reach 6” to 12” tall and about as wide. The waxy-appearing foliage is lance-shaped, arises outward from the center of a rosette, and is a glossy dark red (full sun) to olive-green (less than full sun). In summer's warmth, mature plants will send up a tall flower spike of tubular yellow flowers that are pollinated by hummingbirds. Grow in full sun exposures (for best coloration) in a sandy, fast2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 20 draining soil that has some organic matter. In winter site on a sunny windowsill. Tolerant of extreme heat and drought, however plants flourish when water is available in the heat of the growing season; markedly less water is needed in autumn and winter. Use as a tropical rockery specimen, in xeriscapes, in a sunny border's foreground, or in a container to contrast with other arid plants of silver or green foliage. Plant this in a pot with an interesting rock or maybe some cobalt blue glass or a piece of driftwood or why not all three -- suddenly you have a Thomas Hobbs-like jewel box container of “shocking beauty.” It tolerates mild subfreezing temperatures as long as the soil is not wet (listed as hardy to Zone 7a). For additional information on bromeliads, see listing: Bromeliads. Dyckia ‘Nickel Silver’ (Saw Blade; Dyckia – Another gorgeous dyckia with long, narrow leaves of green, heavily overlaid with silver, and armed with big white spines along the margins. The stiff foliage is 1/2” wide and tapers to a point. The spiky rosettes of foliage are strangely reminiscent of starfish and they are clump-forming and invariably left to grow this way, as they are quite prickly to the touch. Each rounded and mounded rosette will reach 6” to 8” tall to about 15" to 18” wide and a cluster will get much larger in time. Produces 4’ tall red scapes, either simple or two-branched, and orange tubular flowers are borne along the stem in early summer – a hummingbird magnet! Grow in full to partial sun exposures in a sandy, fast-draining soil that has some organic matter. In winter, site on a sunny windowsill. Tolerant of extreme heat and drought, however plants flourish when water is available in the heat of the growing season; markedly less water is needed in autumn and winter. Use it as a tropical rockery specimen, in xeriscapes, in a sunny border's foreground, or in a container to contrast with other arid plants of red or green foliage. It tolerates mild subfreezing temperatures as long as the soil is not wet (listed as hardy to Zone 7a). Dyckias are members of the Pineapple Family (Bromeliaceae), which inhabit the dry, sunny, rocky terrain of South America; they are extremely tough, surviving long periods without water and will take temperatures down to 20º F. For additional information on bromeliads, see listing: Bromeliads. Echeveria subrigida (Fire and Ice Echeveria) -- Commonly referred to as “fire and ice,” this otherworldly echeveria has pale, bluish-green foliage that looks even more so thanks to its blood red edges. Ethereal or ominous, you decide! One of the largest of the echeveria, it forms 6” to 9” tall by 12” to 18” wide rosettes of wide, spade-shaped leaves that are deeply channeled. In late spring to mid-summer appear the heavy upright stalks bearing coral-pink flowers that are orange inside with red nectaries. Plant in very well-drained soil in full sun to light shade; full sun for best color. Give occasional to infrequent irrigation spring through fall and try to keep on the dry side when wintering indoors. Echeveria subrigida comes from San Luis Potosi, Mexico and is a member of the Stonecrop Family (Crassulaceae). Fire and Ice is perfect for the sunny windowsill, rock garden borders, and garden troughs, and do remember sunny and well-drained is the secret for success. Ensete ventricosum ‘Maurelii’ (Abyssinian Red Banana) – This member of the Banana Family (Musaceae) is native to the mountains of Ethiopia and is a popular choice for creating dazzling, tropical effects in ornamental plantings. The wine-red coloring on the upper surfaces of the large, paddle-shaped, 6’ to 10’ long leaves and on the 10’ tall (up to 20’ tall in tropical zones) pseudo-trunk, makes this large banana so colorfully unique. It is fast-growing and does not produce suckers. Plants are best grown in organically rich, very moist, well-drained 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 21 soil in full sun. Site in wind-sheltered areas such as courtyards, walled gardens, atriums, and walls to prevent shredded foliage. Options for overwintering include: (1) Bring container plant indoors in fall before first frost and place container in a large sunny room for overwintering as a houseplant, with reduced water and fertilization; (2) If container plant is too large to bring inside as a houseplant, cut foliage back to the pseudo-trunk in fall after first frost, and store container in a cool, dark, frost-free corner of the basement until spring, periodically adding a bit of moisture to prevent the soil from totally drying out; (3) If container plant is too heavy or too large to bring inside, remove plant from container in fall before first frost, wrap roots in plastic and store in a cool, dark, frost-free corner of the basement until spring (foliage may be trimmed back or left on the plant and allowed to brown up normally). Euphorbia cotinifolia (Tropical Smoke Bush; Mexican Red Spurge) – This deciduous tropical shrub, native to Mexico, has rounded to oval, coppery-burgundy foliage with burgundy stems which provide a showy display from summer into fall. Most of the appeal comes from the leaf color, dark burgundy on older leaves, coppery on newer foliage, and bright red on emerging foliage; the colors are intensified when given day-long full sun. Loose flower clusters have small white to pale yellow bracts in spring. Best grown in full sun with moderate water and good drainage. Like other members of the Euphorbia Family (Euphorbiaceae), it has milky sap which may irritate the skin. The color and shape of the leaves are reminiscent of the hardy smoke bush, Cotinus coggygria, hence the species name. In the wild this euphorbia grows 10’ to 15’ tall and 6’ to 8’ wide, however in the Delaware Valley expect it to get no larger than 5’ high and 3’ wide. Erythrina variegata (Coral Tree; Tiger Claw, Sunshine Tree) – A spectacular tropical displaying bright red, coral-like clusters of flowers and eye-catching, variegated foliage. The 16” long inflorescence which typically blooms over winter with sporadic bloom in summer is densely packed with 3” long blossoms that sport ornamental, protruding, scarlet stamens. Green trifoliate, 10” leaves shaped like those of bean plants are generously veined with vivid golden-yellow color. In its native habit which ranges from E. Africa through SE Asia to Fiji, Coral Tree will grow up to 60’ tall, but under non-tropical conditions, it is much more shrubby and compact and will grow in a container to summer outdoors and to winter indoors as a houseplant. If allowed to dry out somewhat while being stored over the winter months, Sunshine Tree will resemble its other name Tiger Claw and reward you with bright coral-red, claw-shaped blooms. Grow this member of the Pea Family (Leguminosae) in full sun and allow it to become slightly dry between waterings. Fuchsia ‘Autumnale’ (Autumnale Fuchsia) -- Vibrant green and gold foliage, maturing to shades of coppery red, adorn the gracefully arching stems of this trailing fuchsia. Dainty single flowers with red sepals and rich purple corollas decorate the stems from mid-summer until first frost. The trailing habit of Fuchsia 'Autumnale' makes it ideal for containers, window boxes and hanging baskets – or maybe try it in beds and borders for a quick and easy groundcover. This vibrant member of the Evening Primrose Family (Onagraceae) excels in its cascading and mounding habit reaching about 18” to 24” high and wide. Fuchsias do not like to dry out. Keep the soil moist to the touch from spring through autumn. In hot summers (and especially if planted in a hanging container), the fuchsia will require daily watering. Best of all, fuchsia is one of the hummingbirds favorite flowers. 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 22 Fuchsia ‘Gartenmeister Bonstedt’ (Honeysuckle Fuchsia) – This Fuchsia hybrid is unique because of its red-tinted foliage. The leaves emerge reddish purple and age to a satiny bronze-green with dark red veins and purple undersides. Contrasted against the foliage are honeysuckle-like, drooping clusters of intense, orange-red, 2” long, tubular flowers; hummingbirds will seek them out in search of nectar. Vigorous, free-flowering, and upright in habit, it will reach a height of about 18”. Plant in perennial borders or use in mixed containers. All fuchsias enjoy moist, well-drained soil and being sheltered from hot winds and hot afternoon sun. Grow this member of the Evening Primrose Family (Onagraceae) in a greenhouse during the winter, or take cuttings to overwinter, or simply treat as an annual. Fuchsia ‘Hidcote Beauty’ (Fuchsia,) – Heat tolerant and relatively hardy, 'Hidcote Beauty' is a lovely combination of luscious salmon pink corollas and creamy-white sepals with a hint of green on its tips. A free-flowering, branching, and upright-spreading shrub with ovate, minitoothed dark green leaves. Because of its habit, it will spill over pots beautifully, making it perfect for hanging baskets or tall urns, and providing a delightful display wherever grown. This member of the Evening Primrose Family (Onagraceae) will reach around 18” to 24” tall with a 24” spread. Provide morning sun and a rich, moist soil. Take cuttings in late summer to overwinter indoors, ready for planting out the following spring. All fuchsias enjoy being sheltered from hot winds and hot afternoon sun. Be sure to keep well-watered during the hot days of summer. Gladiolus murielae (Abyssinian Gladiolus; Peacock Gladiolus) – This member of the Iris Family (Iridaceae) is native to the mountainous areas of eastern Africa. Sword-shaped, medium green leaves (to 2’ long) in upright fans are typical of most gladioli; however the fragrant, star-shaped, white flowers (2” to 3” across) with pointed spreading petals and dark purple throats are less typical of most gladioli. Flowers bloom in 2- to 10-flowered spikes atop scapes rising to 2’ to 3’ tall in late summer to early fall. It is commonly cultivated in European gardens, where the corms are lifted every year and stored under frost-free conditions. Hardiness: Zones 8 to 10. Best grown in loamy, medium moisture, and well-drained soils in full sun. Adapts to a wide range of soils except heavy clay. Site plants in locations protected from strong winds. Globba ‘Blushing Maiden’ (Dancing Ladies) – Globba is a genus of delightful, dainty plants that could hardly have been given a more unattractive sounding name. The name derives from an Indonesian word for the plants, "galoba" and there are about 100 species in the genus, all from Asia and belonging to Ginger Family (Zingiberaceae). The common name "dancing ladies" is derived from the way the flowers seem to dance in the air suspended from the bracts. Multiple pendulous bracts of vividly colored flowers adorn these petite plants, sometimes called Dancing Girls or Ladies. ‘Blushing Maiden’ is part of the patented Jungle Jewels series, and is characterized by a two-tone blend of pink and white bracts with pink streaking and yellow-green tips. One of its parents is Globba winitii listed below. The dark green, long, lance-shaped foliage displays reddish undersides and is borne on bushy 18” tall plants. Excellent for container culture; plant in fertile, organic, well-drained soil, and provide full shade. Will tolerate a little sun if kept moist. The life cycle consists of numerous leafy stems emerging in April and May with vigorous growth until flowering commences from July 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 23 through November with persistent white and pink two-tone bracts. In December the plant goes dormant. Globba winitii (Dancing Girl Ginger) – This species is one of the most beautiful gingers in cultivation, graceful and delicate, a real treasure among gingers. It is a small, compact, shade-loving plant reaching about 1' to 1-1/2' in height. The inflorescence hangs down from the stem and is comprised of showy bracts in mauve-purple with emerging tiny, bright yellow flowers giving quite a color contrast. The common name, "dancing girl," is derived from the way the orchid-like flowers seem to dance in the air as they suspend from the bracts. The flowers will appear sporadically from July until dormancy in the fall. Excellent for container culture; plant in fertile, organic, well-drained soil and provide full shade. Will tolerate a little sun if kept moist. The life cycle consists of numerous leafy stems emerging in April and May with vigorous growth until flowering commences from July through November with persistent colorful bracts. In December the plant goes dormant. G. winitii is a member of the Ginger Family (Zingiberaceae) and is native to Vietnam and Thailand. Gomphrena Pink Zazzle™ (Globe Amaranth) – This hot, flashy annual made its debut this spring. It’s not your grandmother’s globe amaranth you are familiar with, i.e., tightly rounded, clover-like heads with paper-like petals; this is a flower form that reminds one of an annual aster. The large, eye-catching, brilliant fuchsia-pink flowers which age to soft pink, can expand to 3” in width. It’s a day-neutral bloomer so it flowers consistently from spring through fall, performing best in warm weather and high light. Like other globe amaranths, the flowers are exceptionally long-lasting, up to three weeks outdoors and two to three months as cut flowers. It will grow to 2’ in height and 1’ wide, and unlike its relatives, it has an attractive branching habit. Provide full sun and well-drained soil for this member of the Amaranth Family (Amaranthaceae). Gossypium herbaceum ‘Nigra’ (Black Cotton) – This cultivar of ornamental cotton has the blackest of black foliage! By midsummer, hibiscus-like, bright burgundy flowers start blooming, followed by walnut-sized seedpods. By summer’s end when the seedpods are ripe, they split open to reveal white fluffy balls of cotton. Absolutely stunning! Site this member of the Mallow Family (Malvaceae) in full sun and in well-drained soil and it will grow 24” to 30” high. The straight species is native to the semi-arid regions of sub-Saharan Africa where it grows in the wild as a perennial shrub. Guzmania musaica (Guzmania; Scarlet Star) – This striking, epiphytic (growing on trees) bromeliad, native from Costa Rica south to Ecuador and Venezuela, forms a rosette of foliage to a height of 8” to 16”. Leaves are about 2’ long with spineless margins and a bright green coloration which is cross-banded with purple to deep green, very wide striations. Upon flowering, a long stem topped by a beautiful, club-like inflorescence arises from the center of the rosette. This inflorescence consists of red bracts with many waxy, tubular, white flowers set tightly into the poker-shaped flower head. In the wild the plant typically blooms from June to August. After it has produced its fruits, the plant dies and new plants are produced in the form of pups. Guzmania need bright, but indirect light and warm temperatures to grow well. Water your plants well and then allow the soil to dry before watering again; proper drainage is essential, letting water to drain off quickly and allowing air to reach the roots. Keep water in 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 24 the cup at the center of the plant, especially during the summer months. Plant should be kept drier during the cooler or winter months. A member of the Bromeliad Family (Bromeliaceae). For additional information on bromeliads, see listing: Bromeliads. Hebe ‘Variegata’ (Hebe) – A bushy, rounded shrub which is widely grown for both garden and container use. This evergreen has thick, rounded grey-green leaves with irregular, creamy margins and from July to August displays eye-catching, rounded spikes of violetpurple flowers rising above the foliage. Hebes are recognized by their unique leaf arrangement - the leaves stack up opposite each other in a beautifully layered, cross-shaped display. Like all hebes, this cultivar requires a sunny location, well-drained soil, and regular watering. It is a good choice for attracting bees, butterflies, and birds to your garden, and is ideal as a low hedge or container plant. Habit is compact and rounded reaching 2’ to 3’ tall and about as wide. The genus Hebe is a member of the Plantain Family (Plantaginaceae) and is native to New Zealand, French Polynesia, the Falkland Islands, and South America. Hedychium coccineum ‘Tara’ (Butterfly Ginger) – For all you gardeners who have recently been moved into Zone 7, this is the ginger for you! Touted as surviving temperatures down to 0º F, a claim no other Hedychium coccineum cultivar can make, ‘Tara’ was discovered as a seedling in the Kathmandu Valley in Nepal by Kew Gardens in the 1970s; the word Tara is Nepalese for star. This is a large, well-branched, stately plant, with long, strap-shaped, bluish green leaves emerging from below the long, 12” to 15” flowering stems. Flowers are bright orange with even brighter red stamens protruding far beyond the petals, and their fragrance is intoxicating. Blooming begins in midsummer in most climates and continues into mid-fall. It is considered a superior ginger, blooming earlier and longer than most gingers. Butterflies and hummingbirds constantly visit this perennial, which reaches 6’ to 8’ tall and 3’ to 4’ wide. The foliage dies back during winter, but reappears in spring. Easy to grow in full sun to light shade, in moist, well-drained soil. 'Tara' does require consistent moisture and plenty of it, so consider it for waterside plantings if the drainage is good. A majestic, fragrant, colorful, exotic and yes, hardy member of the Ginger Family (Zingiberaceae). Zones 7-11. Hibiscus acetosella 'Jungle Red' (African Rosemallow; False Roselle) – Need a tall, bold tropical with intense color as a backdrop for your summer beds and borders? Give this tender perennial subshrub, native to tropical East Africa, a try. Wine red, 7’ stems bear lacy, deeply dissected, burgundy leaves, resembling those of a Japanese maple. The habit is vase-shaped and each plant bears several stems. The flowers appear in winter and are 3 to 4 “across and emerge in shades of pink and maroon with darker vein markings. Most gardeners in temperate regions will never see the blooms unless the plant is moved into a greenhouse over the winter. Use as a thriller (upright accent) for containers and urns. Plant in fertile, welldrained soil with plenty of sunlight, and for more luxurious growth and more attractive foliage, provide uniform moisture during the growing season. A member of the Mallow Family (Malvaceae). Impatiens auricoma ‘Jungle Gold’ (Jungle Gold Impatiens) – The first golden-yellow impatiens, ‘Jungle Gold’, is very free flowering and displays golden-yellow, orchid-like blooms. This perennial species of Impatiens is native to a group of small islands, The Comoros, which form an archipelago of volcanic islands situated off the southeast coast of Africa. Intricate 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 25 orchid-like blooms to 1” long are a rich golden yellow with throats marked in red. The dark glossy green, oval, pointed leaves can reach up to 8” long and the habit is mounding, reaching 15” to 18” tall. An outstanding plant for shady areas, it can be grown in containers or in the landscape. Provide this member of the Balsam Family (Balsaminaceae) partial shade and humusy, moist but well-drained soil in a sheltered location. Ipomoea batatas (Sweet Potato Vine) – Native to tropical America, sweet potato vine is a tuberous rooted, tender perennial that has been cultivated for its orange-fleshed, edible tubers for over 2000 years. It was reportedly brought back to Europe from the New World by Columbus. Today the sweet potato is a popular root vegetable grown in vegetable gardens and as a commercial food crop throughout the world. Although the species grown as food crops have somewhat attractive green foliage, it is the more recently introduced purple-, chartreuse- and variegated-leaved cultivars that have transformed this vegetable into a popular ornamental foliage plant. If grown as a ground cover, plant stems typically mound to 9” tall but spread by trailing stems from 8” to10’ wide, rooting in the ground at the leaf nodes as they grow; if grown as “foliage contrasts,” allow to hang down over the edges of containers or window boxes. Leaves of the ornamental varieties are heart-shaped to palmately-lobed (to 6” long) and come in bright green, dark purple, chartreuse, and variegated (green with pink or white) colors. Although species plants produce pale pink to violet, trumpet-shaped flowers, ornamental varieties usually do not flower. Tubers of the ornamental varieties are edible, but are not as tasty as those specifically bred for food production. Easily grown in average, welldrained soils in full sun. Best leaf color usually occurs in full sun and consistently moist soils are best. A few of the ornamental cultivars we are offering for sale are: ‘Dwarf Marguerite’ – A dwarf variety of ‘Marguerite’ that does not take over the container. Grows 2’ to 4’ long and is compact and mounding with lime green, hourglass-shaped foliage. ‘Bullfrog’ – Looking quite similar to the hourglass leaf shape of the chartreuse ‘Dwarf Marguerite’, ‘Bullfrog’ has a dark bronze-purple leaf color which is splashed and speckled with highly contrasting lime green. ‘Bullfrog’ is one of the cultivars in the Sweet Georgia® Series which was selected for improved color and compact growth habit; it is excellent for small containers as well as mixed containers, with the advantage that it will not overtake other plant material. Ipomoea quamoclit (Cypress Vine) -- Native to tropical America, cypress vine is a warmweather, annual twining vine of the morning glory family (Convolvulaceae) that is grown ornamentally for its attractive scarlet flowers and fern-like foliage. It typically will grow 6’ to 10’ long, and infrequently to as much as 20’ long. Each green leaf (2” to 4” long) is pinnately divided into threadlike segments, giving the foliage a ferny appearance. Scarlet red flowers (to 3/4” in diameter) bloom in small cymes from early summer into fall. Each tubular flower is starshaped, flaring open at the mouth into five pointed lobes. Flowers are attractive to hummingbirds and butterflies. This tropical vine is an annual and is easily grown in average, medium moisture, well-drained soils in full sun. It will tolerate some dry conditions, but grows best with consistently moist soils. Cypress vine is thin-stemmed and somewhat fragile, and it needs a support structure upon which to grow. 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 26 Leonotis ocymifolia var. raineriana (Lion’ Ear; Wild Dagga) – A perennial shrub that grows to a height of 6’ to 10’ with a 3’ spread in its native habitat of South Africa; however, expect much less in the Delaware Valley. Lion’s Ear has beautiful and colorful flower spikes similar in appearance to the more commonly grown, Leonotis leonurus, also frequently called Lion’s Ear. Its woody base produces many erect herbaceous stems bearing fragrant, medium-green, 4” to 6” long, ovate leaves with softly serrated margins. Tubular, two-lipped, fuzzy, orange-red flowers appear in tiered whorls that encircle the square stems. The flowers contain bittersweet nectar and its petals purportedly resemble lions’ ears. Flowers bloom in fall from plants placed out in early spring. Site this member of the Mint Family (Lamiaceae) in full sun in a well-drained soil. This is an excellent plant for inviting wildlife to your garden as the flowers produce copious nectar which attracts birds, bees, and butterflies. Lotus berthelotii (Parrot’s Beak) – ‘Parrot's Beak’ is a trailing tender perennial or warm weather annual vine that grows to 8" tall but spreads to 2’ to 3' wide or more. Where not winter hardy, it is grown as an annual in containers or hanging baskets. It features soft silvergray leaves and sharply contrasting, pea-like, crimson flowers. Leaves are divided into needle-like leaflets (each to 1" long) that are spaced along the stems in attractive whorls (3 to 7 leaflets per whorl). Stems will spread to 2’ to 3' long or more. Flowers bloom in clusters at the stem ends in spring and early summer. Each flower (to 1" long) is red (maturing to orangered) and sickle-shaped with a prominent beak. Plants are native to the Canary and Cape Verde Islands where they are severely endangered, but this species survives in cultivation. ‘Parrot’s Beak’ is best grown in light, well-drained soils in full sun; it tolerates some part-shade conditions in our hot summer climates. Pinch stem ends to promote branching. Plants require excellent soil drainage; too much or too little watering typically causes foliage drop Addition of some sand to the soil or potting mix may help promote better drainage. Plants perform best with even moisture, but allow the top of the soil to mostly dry before re-watering. Best flowering occurs in the cool weather of spring and early summer. Plants dislike hot summer temperatures and may stop blooming in summer, particularly when nighttime temperatures remain high. This lotus is totally unrelated to the water lily also commonly called lotus, however it is a member of the Pea Family (Fabaeceae). Typically grown cascading over containers and hanging baskets. Manihot esculenta ‘Variegata’ – Commonly known as bitter cassava, tapioca, manioc or yucca, this is a milky-sapped tropical shrub that grows to 6’ to 10' tall. Although native to Brazil, it has been planted as an annual root crop in tropical areas around the world for harvest of its stout, elongated, tuberous roots from which cassava, tapioca, starch and other food products are obtained. It features palmately-lobed, medium green leaves (typically 3-7 parted) with each leaf lobe growing to 3” to 8" long. Small, apetulous, greenish white flowers in short terminal panicles bloom throughout the year. Fruit is an oval, 6-winged capsule. Species plants and un-variegated varieties have little or no ornamental value. However, the cultivar, 'Variegata', is an extremely attractive, ornamental plant because of its beautiful foliage, featuring bright green leaves variegated along the midrib/veins with yellow. The yellow variegation eventually fades with age to creamy-white. Count on it reaching 3’ to 5’ tall and about 3’ to 4’ wide. This member of the Spurge Family (Euphorbiaceae) demands full sun in a well-drained soil. Offers a colorful contrast to other containerized and border plants. 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 27 Medinilla myriantha (Malaysian Orchid; Malaysian Grapes) – A very pretty plant for shady containers. This plant is an epiphyte in its native habitat in Malaysia and possesses foliage reaching about a foot long – dark green with light green veins The beauty of the plant is its flowers consisting of light pink bracts that grow in clusters which may pop up at any time of the year. After blooming baby-pink, the flowers turn a deeper pink, then magenta, and finally finish dark red like sweet ripe cherries. This plant is attractive to bees, butterflies, and birds. In the wild it can grow to 6’ tall and spread out to about 6’, however expect about 2’ to 3’ high and wide under our growing conditions. Morning sun is acceptable, but some protection from the hot, early afternoon sun is needed. Grow over water in pebbled trays since it thrives in high humidity. Use well-drained potting mix, to which you have added about 30% orchid mix, and keep container soils slightly moist but not wet. Overwinter plants on warm sunny windowsills as houseplants or in a greenhouse; reduce watering in winter. Member of the Melastoma Family (Melastomataceae). Melianthus major (Honey Flowerbush) – Indigenous to South Africa, ‘Honey Flowerbush’ is an easy garden plant grown worldwide for its attractive foliage. The 12” long, bluish-green leaves have 10 to 15 serrated leaflets and when bruised emit a strong peanut butter smell. A fast-growing shrub, it reaches a height of 8’ to 12’ and about as wide in its native habitat. Expect a much smaller version in the Delaware Valley. Spikes of dark maroon, nectar-rich flowers are displayed on stalks above the foliage; however flowers are rarely produced in our area since the plant needs a long, warm growing season. It prefers a warm, sunny position with good drainage. Although quite tough and adaptable, it will flourish in deep, rich soil, especially if given plenty of water. This architectural beauty is a member of the Honey Bush or Melianthus Family (Melianthaceae) and is stunning in mixed borders or containers. Mussaenda frondosa (Flag Bush) – Slightly glossed, crepe paper-like leaves are a soothing backdrop for flag bush's small orange flowers that are set off by a large white sepal. An evergreen tropical shrub that is sensitive to winter chill and killed by freezes, it is native to extreme southeastern Asia including Indonesia and is a member of the Coffee/Bedstraw Family (Rubiaceae). The elongated, tapering oval leaves are medium- to yellow-green and tend to appear weeping on the slender branches. From the warmth of spring to autumn, branch tips will bear small clusters of five-petaled, star-like orange flowers. The blossom has an extra-large white, flag-like sepal (modified petal leaf) that is downy and is often mistaken for the flower. Butterflies will visit the true orange flowers. Grow flag bush in full to partial sun in a frost-free landscape with a fertile, humus-rich, sandy soil that is moist but well-drained. Use it as an accent shrub in a mixed tropical border for prettiest effect. It also works well in a container. Native to Southeast Asia from India to Indonesia. NEOREGELIA (Blushing Bromeliad) – This is a genus of over 100 epiphytic species that are members of the Pineapple/Bromeliad Family (Bromeliaceae) and native to tropical South America. There are over 5,000 registered cultivars and they can be easily grown year round, indoors and out, for their bold texture and colorful leaves. Neoregelia leaves are often mottled, marbled, or banded. The flat, broad and usually stiff leaves form a rosette where small white, blue, or purple flowers bloom deep in the center of the rosette “cup.” Flowering continues for several weeks with each individual flower lasting one to two days. The leaves of some 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 28 species bear spines or scales and the central section of the leaves often becomes highly colored just before and during flowering periods. After blooming, the plants produce a number of offsets that can be separated and potted when they develop four mature leaves, or are about 1/2 the size of the mother plant. The mother plant will eventually die. Give them warm temperatures, bright light to shade, and even moisture with excellent drainage. Use them as accent plants or group together for even greater impact. Plant size will range from approximately 2” tall and 3/4” wide (Neoregelia ampullacea) to 16” tall and 36” to 48” wide (Neoregelia carcharodon). For additional information on this member of the Pineapple Family (Bromeliaceae) see listing: Bromeliads. Neoregelia ‘Allure’ -- As with most Neoregelias, ‘Allure’ isn’t very tall, only reaching about 12” in height and up to 17” in diameter. The foliage is lime-green with a lilac-pink center and lilac-purple tips at the end of each leaf. ‘Allure’ will take full sun and loves to summer outdoors in containers or in the landscape. Bring indoors before a hard frost. Neoregelia ‘Avalon’ – ‘Avalon’ has a small to medium rosette with handsome wide leaves that are dark rusty-red and slightly marked with tiny green flecks that dot and dash the length of the foliage. The center of the rosette turns deep red at blooming. A mature plant may reach around 12” and up to 18” wide. Neoregelia ‘Bossa Nova’ – This is a beautiful, glossy, bright green Neoregelia with crisp white variegated margins, about 1” wide and up to 12” long, which will blush slightly pink in good light. When the plant is about to flower, it will become bright red in the center. This cultivar can grow up to 12” tall and stretch out to around 24”. These clean, crisp, elegant plants are stoloniferous and therefore send out “pups” (rosettes) generously. Provide part to full sun for the best coloration. Neoregelia ‘Dr. Jeffrey Block’ – A large albo-marginated Neoregelia with a bright, wide cream band running down the outside edge of the leaf margin, contrasting against the medium green mid-rib. When mature, a deep purple center highlights the rosette. Site as either a single specimen in the landscape or place this colorful bromeliad in a “fancy” pot as a show stopper. Mature size: 18” high and 32” wide. Provide part to full sun for the best coloration. Neoregelia 'Jill' – Dark coppery-orange foliage with lime-green marbling and spots. Habit is stoloniferous, forming rosettes that spread out horizontally along stolons eventually forming a large cluster of plants. Site in full sun to maintain the brilliant copper tones. Mature size of the rosette is 10” high and 12” wide. Neoregelia johannis – This species form of Neoregelia has a red tip at the end of each leaf that brightens the wide, variegated foliage. The leaves have a mild green outside edge with an almost grayish-cream center. What is probably the most unusual of all about N. johannis is the almost “finger-painted” marking all over the plant; indeed, a most unusually colorful plant. Native to Brazil, it is the largest of all neoregelias with the colorful rosettes maturing anywhere from 16” to 36” wide and 10” to 16” in height; it is also one of the cold-hardiest. The water in 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 29 the funnel of a large clump can be up to 15 quarts! Give morning sun or light-shade; the brighter the light the more purplish the creamy gray center will be. Nephrolepis exaltata Rita's Gold™ (Golden Boston Fern) – While the frond size is slightly smaller than other Boston ferns, the color stays true all summer. This golden-leaved selection features striking chartreuse fronds grow 18” to 24” long; it prefers shade but tolerates intermittent sun. A beacon of light in the garden blending in beautifully with impatiens, begonias, caladiums, and other tropicals in mixed containers. Outdoors, grow in moderately fertile, moist but well-drained, humusy soil in partial shade. If grown as a houseplant, grow in bright filtered light in a humid area with good ventilation. Water sparingly in winter. A member of the Sword Fern Family (Davalliaceae); the species is native to Florida, Mexico, Brazil and the West Indies. Nicotiana langsdorfii (Flowering Tobacco) – Bold, broad, deep green leaves nearly a foot long and panicles of flowers the color of a Granny Smith apple make this Nicotiana a great companion for many other garden plants. The pendulous, bell-like, tubular flowers are fascinating, primarily for their unusual pale green to chartreuse color. Turn up a flower to see its bright blue anthers. It looks especially handsome with dark-foliaged trees or shrubs like purple smoke bush (Cotinus coggygria ‘Royal Purple’) or purple-leaved ninebark (Physocarpus opulifolius ‘Diabolo’). It is also grows well with grasses. Grow in moist but welldrained soil rich in organic matter, in full sun or part shade. Stake if necessary. Self-sows so look for baby plants the following spring. This member of the Nightshade Family (Solanaceae) forms clumps 3’ to 6’ high and 1’ to 3’ wide. Native to tropical South America, primarily Brazil, Argentina and Bolivia. Orthosiphon aristatus (Cat’s Whiskers, Java Tea) – Beautiful, dramatic flowering plants that bear 3” to 6" long flower spikes from summer to fall. The orchid-like blooms are white and airy with long, white stamens that look like whiskers, hence the common name. Cat’s whiskers can reach 18” to 24" in height and double that in width and is a great asset in attracting butterflies into the garden. This member of the Mint/Deadnettle Family (Lamiaceae) is native to the warm areas of India and thus has little trouble with the heat and humidity of American gardens. Site in full sun to partial sun in a moist, well-drained soil. In Southeast Asia, cat's whiskers are harvested to use in herbal teas for treating kidney stones and other urinary ailments. Oxalis spiralis ‘Plum Crazy’ (Sorrel, Shamrock) – An exciting new look in Oxalis. Its cloverlike leaves are dark purple maroon liberally marked with bright pink splashes. Small, 1” to 2”, 5-petalled, yellow flowers bloom above the foliage all year long. It will reach 6” to 12” high and spreading wider with a mounding, trailing habit. A wildly beautiful thriller for mixed containers, ‘Plum Crazy’ is in love with sun and heat. The blooms, massed on trailing stems, look great spilling over the sides of window boxes and containers or use as a summer bedding plant to punch up that bland spot in the garden. Site this South American native and member of the Oxalis Family (Oxalidaceae) in full sun or part shade, in any well-drained soil. Passiflora ‘Sunburst’ (Passion Vine) – This rare and tender vine puts forth copious amounts of cheerful, brightly colored, 1” flowers that are decorated with lime-green sepals and bright orange corona filaments. The flowers may be small but the color is rare for passion flowers. 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 30 The leathery, bat-shaped foliage is fantastic too, with striping, nectar dots, and purple undersides! The vine climbs by tendrils produced in the leaf axils and the stems are slender. ‘Sunburst’, introduced in 1983, is a hybrid between Passiflora gilbertiana x P. jorullensis and a member of the Passiflora Family (Passifloraceae). Provide full sun to part shade, water moderately, and make sure the soil is well-drained. A vigorous climber for walls and arbors, or decorate our shrubs and trees with bright orange flowers. Pereskia aculeata (Lemon Vine, Barbados gooseberry) – A most unique member of the Cactus Family (Cactaceae) bearing leaves. This climbing shrub with a tendency to vine with time, and a bearer of spines in pairs or threes makes this rainforest succulent the perfect candidate for hanging baskets. Lemon vine produces 3” long, waxy leaves of coppery-salmon blushed rosy-red beneath strongly scented, white, 1-1/2” rose-like flowers, and a fruit that is edible, yellow and spiny. Enjoys morning sun or bright shade and soil with good drainage. Scrambling or climbing with support, it will grow 3’ to 4’ in one season. Native to the Caribbean and South America. Peristrophe hyssopifolia ‘Aureovariegata ‘(Marble Plant) – A brightly, variegated tropical shrub from India. The leaves are long and narrow, curving downward and are a dark green with lemon-yellow radiating out from the midrib and veins. The variegation is more pronounced in full sun. The striking foliage is adorned with delicate wands of small violet flowers possessing one top petal and one bottom petal; they appear during summer. Makes an excellent "filler" in mixed container designs to give a colorful filigree and feathery effect or use in the landscape as a groundcover. Easy to propagate from cuttings, it has a mounding habit and will reach 15” to 18” tall and 18” to 24” wide in one growing season. Grow this member of the Acanthus Family (Acanthaceae) in full sun to partial shade and allow to slightly dry out between waterings. Phormium ‘Rainbow Queen’ (New Zealand Flax) – With its arching, strappy, sword-shaped leaves, this clumping New Zealand Flax makes a dramatic statement in the garden. Native to New Zealand, where their fiber has traditionally been used in the same way as hemp or sisal, they are versatile evergreen plants that tolerate a range of conditions and have become increasingly popular in recent years, with more and more colorful varieties being introduced. ‘Rainbow Queen’ has broad, bronze-green leaves with rose-red margins, and a sliver of cream at the edge, growing after many years up to 4’ to 6’ tall and 3’ to 4’ wide. This dramatic, evergreen, architectural plant will add a touch of exotica to a sunny spot in the garden. In hot, long summers, a spike of tubular red flowers will shoot up from the center, followed by sturdy seed heads. This member of the Daylily/Aloe/Grass Tree Family (Xanthorrhoeaceae) needs moderate watering. Pilea glauca ‘Aquamarine’ (Red Stem Pilea) – This new cultivar of Pilea has more intense silvery blue, rounded leaves than the species. An enchanting, miniature plant growing 2” to 4” tall and spreading 12” to 28” wide. Pilea’s very small, steel blue foliage contrasts sharply with its mahogany red stems. As a very low-growing spreader, it forms an excellent creeping mat and will sporadically bloom with clusters of small, pale pink flowers. Suitable when planted with succulents, interesting when spilling out of a hanging basket, or place in a piece of 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 31 pottery as a table centerpiece. Grow this native of Southeast Asia and member of the Nettle Family (Urticaceae) in partial shade and keep the soil moderately moist. Pilea peperomioides (Chinese Money Plant, Missionary Plant) – Not to be confused with the Chinese money tree, the Chinese money plant is native to southwestern China growing upon limestone rocks and brought to Europe by a Norwegian missionary in 1946. Reaching 12” to 18” tall and 12” wide, it is an erect, succulent, evergreen perennial with round, dark green, peltate leaves up to 4” in diameter supported on long petioles. Its habit takes on an almost palm tree appearance as the leaves are held away from the main stem. Tiny, pale green flowers sometimes tinged pink occasionally bloom in sprays above the foliage. It closely resembles a Peperomia thus the species name. Requires bright, indirect sunlight in welldrained soil, drench, then let dry. The Chinese money plant is an ideal houseplant as it is pretty undemanding, fast-growing, and leafy all year round. A member of the Nettle Family (Urticaceae). Platycerium bifurcatum (Elkhorn Fern; Staghorn Fern) – Large, rounded leaves that look like shields are a backdrop to the antler-like fronds of the common staghorn fern. A coldtender, evergreen fern, it is native from Indonesia to New Guinea and eastern Australia. This bizarre fern, an epiphyte, grows on the branches of tree canopies or on fallen logs and consists of two types of fronds, sterile and fertile. The sterile leaves appear as a large battle shield, are basket-shaped, and help the fern support itself on its host. These fronds are sometimes called nest leaves because they catch falling debris which acts as compost for the growth of the fern. The nest leaves are pale green, very fuzzy when young, and grow tightly against the host tree. As the plant matures, the fertile, antler fronds start to grow. The "antlers" are the true leaves of the fern. These two-lobed, silvery-green fronds hang down, are narrow and forked, and appear as long fingers along the lower edge. In between those two lobes on the underside of the frond is a large spore patch which ages to a fluffy brown. With age, antler fronds hang to a length of up to 6’ and the spread across the top of the sterile fronds can be 6' as well. Best grown in a hanging basket, mounted on a slab, or suspended on wires and hung from a wall or tree branch to display at eye level. Give this member of the Fern Family (Polypodiaceae) warm, humid conditions in a bright or semi-shaded spot and keep wellwatered in summer and less frequently in winter. Clean the fronds by mist-spraying or allow them to be cleansed by gentle rains; wiping them will remove their attractive and functional, felty surface. Plectranthus 'Mona Lavender' (Spur Flower; Swedish Ivy) – A vigorous, upright, rounded, and bushy subshrub that typically grows 12” to 16” tall and 24” to 36” wide. Unlike many members of the genus Plectranthus, this hybrid (P. saccatus x P. hilliardiae) is primarily grown for its attractive, lavender flowers which appear over a long period of bloom. ‘Mona Lavender’ is the result of a breeding program carried out in the late 1990s at Kirstenbosch Botanical Garden in Cape Town, South Africa. The tubular, two-lipped, lavender flowers bloom in spikes to 6” long and the glossy, ovate, dark green leaves have intense purple undersides. It does very well in either shaded or partly sunny positions. When it receives sun it tends to stay smaller and more compact and the leaves exhibit a much more intense coloring, especially on the purple undersides of the leaf. Provide well-drained soil but water on regularly. Pinch back 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 32 to induce better branching and compactness. This hybrid is a member of the Mint Family (Lamiaceae); both parents are native to the Eastern Cape of South Africa. Plumbago auriculata Royal Cape® (Cape Leadwort; Plumbago) – A mounding and sprawling, vine-like shrub with light green, soft foliage and continual flushes of phlox-like flowers throughout spring, summer and into fall. This selection, Royal Cape®, possesses huge clusters of intense, deep blue flowers that appear on long stems; and is also more compact than other cultivars. Cape leadwort bears many five-petaled, tubular, vivid royal-blue blooms that occur in round clusters at the ends of the branches. The flower bases and seed capsules are covered with sticky, gland-tipped hairs, and often hitch a ride with humans or pets. The flowers are attractive to butterflies and do not require deadheading. A semi-climber by nature, it will clamber over other shrubs unless it is kept trimmed. Provides reliable color as a groundcover, bank cover, or container plant. At maturity, this low-maintenance shrub reaches heights of 5’ tall and 6’ to 8’ wide. Plumbago thrives in well-drained soil and even tolerates sandy coastal areas. Although the plant tolerates partial shade, blooming is stronger in full sunlight. To take advantage of the plant's natural tendency to ramble, plant several shrubs in a group with 4 to 6 feet of space between each plant. As the plant fills in the empty spaces, it develops a graceful, cascading appearance. When planted in containers, it spills gracefully over the sides. Plumbago auriculata is a member of the Plumbago Family (Plumbaginaceae) and is native to South Africa. Portulaca grandiflora ‘Double Sunset Fire’ (Moss Rose. Portulaca) – ‘Double Sunset Fire’ is an exciting new moss rose showing off fully double, 1” flowers with a brilliant magenta roselike ruffled center backed by bright golden yellow petalsl – a vibrant combination of colors that doesn’t seem possible on the same flower! Plants grow 2” to 4” high. Portulaca grandiflora has been a popular garden flower since the late 1800s. It has thick stems covered with succulent, needle-shaped leaves and loves it hot and dry. Plant them in poor, even sandy soil. They also adapt to your average garden conditions, just give them full sun and any welldrained soil. Portulacas look great planted in crevices of rock walls or on the edges of gravel paths. They also work well in containers and hanging baskets. Because they thrive in dry conditions, moss roses are a good choice for strawberry jars. Plant them in rock or alpine gardens for season-long color, or use as a groundcover for hot, sunny areas. Member of the Purslane Family (Portulacaceae). Pseuderanthemum carruthersii var. atropurpureum (Pseuderanthemum, False Eranthemum) – A tropical shrub attaining a height of 2’ to 3’ and a spread of 1’ to 2’ in one season. Grown mostly for its flamboyant foliage, lacquered maroon leaves the color of ripe eggplant, but also for its showy, star-shaped flowers. The large leaves are a deep burgundy almost black, ovate, and 4” to 5” in length. They have a waxy surface adding a soft sheen to their appearance. Blooming late in the season, white, star-shaped flowers with pink throats occur in spires rising above the colorful foliage. Pseuderanthemum works well in containers as foliage accent, contrasting well with silver- or gold-foliaged plants. Site this member of the Acanthus Family (Acanthaceae) in full sun to partial shade for best leaf color, and in rich welldraining soil for best growth. They also make excellent houseplants. 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 33 Pteris cretica var. albolineata (White-Striped Cretan Brake Fern; Ribbon Fern) – The fronds of this pretty evergreen fern have a broad, white band running down the center of each pinnae (leaflet), so it has a sparkling brightness that many of the other ferns do not have. Thus, it makes an invaluable, annual addition to the fern or woodland garden where it will mix easily with other shade-lovers with solid green leaves. Be sure to incorporate lots of well-rotted leaf mold or garden compost into the planting hole. Ribbon fern produces clumps of fronds from short, underground rhizomes. As the upright fronds grow tall, they tend to arch over at the tip; mature clumps will reach around 12” to 24” tall and about as wide. Grow this native of the southern Mediterranean and member of the Maidenhair Family (Pteridaceae) in partial to full shade in moist, but well-drained, humus-rich soil. Overwinter indoors and provide humidity by allowing the containers to stand on trays of moist pebbles. Pteris cretica var. albolineata can be used to create ‘living vertical fern walls’ for small courtyards, in hanging baskets to create vertical height, and is effective when used in mixed containers on shaded patios. Ricinus communis ‘Red Spires’ (Red Castor Bean, Ricinus) – This exotic tropical will certainly add drama to your landscape. Castor bean is a fast-growing, tender perennial with huge, tropical-looking leaves and bizarre seed pods. This East African species is the sole member of its genus in the Spurge Family (Euphorbiaceae). On red stems ‘Red Spires’ reaches up to 6’ to 8’. The large, 18”, typical Ricinus leaves are a deep burgundy-red, much darker then the cultivar ‘Carmencita’. Unimpressive small white flowers are borne in clusters on foot-high stalks in summer, followed by attractive prickly husks that contain seeds. The brilliant raspberry red seed capsules are decorative in themselves. It makes a bold, colorful accent for mixed borders and large annual containers. ‘Red Spires’ becomes very large and bushy so be sure to provide ample space. Castor bean grows best in full sun and average to poor, well-drained soil. Plants are very frost sensitive and will quickly die when the cold arrives. Discard in the garbage and refrain from composting castor bean, it is a very toxic plant. NOTE: The seed contains ricin, a toxin, which is also present in lower concentrations throughout the plant. Ricinus communis ‘Zanzibarensis’ (Giant Castor Bean) – A truly spectacular tropical plant achieving massive size in a single growing season: up to 12’ tall and nearly as wide! This is a much larger variety than the common castor bean and with more conspicuous veining on the leaves. The long-stemmed, huge, palmate leaves up to 3’ across are star-like in shape, a bronzy green, and finely serrated. Bizarre, primitive looking flowers yield to large, up to 18”long. seed stalks of droopy spiked, dark green seed balls drying to brown. Each seed ball contains 3 fat seeds with intricate patterns of brown, white, and dark red. If you want the biggest plant possible, give it plenty of room and site in full sun in rich, moist, well-drained soil. Work in a few spadefuls of compost to a depth of 2’. This member of the Euphorbia Family (Euphorbiaceae) is native to Zanzibar, a small island off East Africa. Planting castor beans is said to be discouraging to moles but do NOTE that all parts of this plant are poisonous to humans. The seed contains ricin, a toxin, which is also present in lower concentrations throughout the plant. Russelia equisetiformis (Coral Fountain; Firecracker Plant) – A multi-branching, evergreen subshrub with 4’ to 5’ long, arching, 4-angled stems with leaves that have been reduced to very small, scale-like, ovate leaflets, very asparagus-like. Both stems and leaves are a bright 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 34 green color and new growth starts erect but rapidly bends over to form a graceful mound. In full sun the stems and leaves can take on a reddish tint. Primarily in spring and summer, the tips of the branches are graced with bright red, narrowly tubular flowers that look like little firecrackers. Plant in full sun to deep shade though flowering is far better in full sun or where it can at least get a half day of sun. Tolerates wind, heat, and most any soil with medium drainage but does require fairly regular irrigation to look its best. In the Delaware Valley it can be brought indoors for the winter where it reportedly will bloom if grown in a bright window. Show off as a spiller in a large urn, allow to tumble over a wall, train up a trellis to make a taller more vertical plant, or simply grow in a hanging basket. This great attractor of butterflies and hummingbirds grows natively from Mexico south to Guatemala and is a member of the Plantain Family (Plantaginaceae). Salvia coccinea ‘Cherry Blossom’ (Scarlet Sage) -- Add some airy sprays of colorful flowers to your garden with this cheery plant. Salvia coccinea is a perennial in its native habitat from Central America to the southeastern US and is used as an annual or bedding plant in cooler climates. This member of the Mint Family (Lamiaceae) has a vase-shaped to upright habit and grows to 2’ tall and up to 1’-1½’ wide, branching readily. ‘Cherry Blossom’ (aka ‘Coral Nymph’) is compact in growth and often not as robust as the species or other cultivars. Medium green, hairy leaves are roughly triangular in shape, with scalloped edges and have long petioles arising from square stems. The trumpet-shaped, bicolored flowers are white and deep pinkish coral and are produced in loose whorls on an upright, terminal inflorescence up to 8” long. Blooming commences when the heat of the summer arrives. The showy flowers produce a lot of nectar and are highly attractive to hummingbirds, butterflies, and bees. Does best in full sun but will tolerate some shade; requires well-drained soil. Deadheading will encourage repeat blooming. Salvia confertiflora (Red Velvet Sage; Sabra Spike Sage) -- With velvety reddish purple stems, smooth bright green new foliage that matures to a textured dark green, and fuzzy vermilion flowers, this Brazilian native is both lush and tantalizing. Wonderful cut or dried, the 6” to 12”-long flower spikes make bold statements in the fall border with asters and grasses, and combine beautifully with mounding perennials. This striking member of the Mint Family (Lamiaceae) grows quickly, starts blooming in September, and continues into November. Requires rich, well-drained soil in full sun. The specific epithet “confertiflor”' means "crowded flowers, the way the flowers are congested on the inflorescence. Ultimate size: 5' high x 3' wide. Salvia leucantha Purple Form (Mexican Sage Brush) – This luscious velveteen-leaved sage is one of the very last of the salvias to bloom in August, but it is well worth the wait, forming soft panicles of alluring purple flowers. The flowers appear in dense, arching, terminal spikes (racemes to 10” long) that extend well above the foliage. Tubular in shape, the flowers consist of purple corollas and longer-lasting funnel-formed purple calyces and are attractive to butterflies and hummingbirds. The narrowly lanceolate, 3”-long leaves of this full and robust shrub are softly pubescent grayish green above and downy white beneath. Reaching up to 3’ in height, it keeps on blooming until the first hard frost. Grow in lean to average soil in full sun to bright, partial shade in well-drained, average to slightly dry soil. Water as needed during dry 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 35 spells. Looks spectacular when grown in small groupings or large masses. Salvia leucantha is indigenous to Central America and Mexico and is a member of the Mint Family (Lamiaceae). Salvia splendens ‘Van-Houttei’ Variegated Form (Van-Houtte Sage) – Annual salvias are often quite a bit flashier than their perennial cousins, producing large spikes of brightly colored flowers on short plants. This variegated form of Salvia splendens takes flashiness to a new extreme: brilliant yellow and green foliage topped by fire engine red blooms. Dramatic wine red calyxes produce showy, deep red flowers that bloom profusely over a long season from late spring through frost. When the flowers fall, the red bracts remain and fool most people into thinking the bloom is still there. This is not a plant for pastel lovers. The flower spikes are not as large as many of the annual cultivars, but the shocking foliage makes up for any difference. Use in locations that need to be brightened up; performs well in both garden beds and containers; and gives a “wow” to an arrangement of cut flowers. This variety, growing up to 3’ tall and about as wide in one growing season, prefers some shade and a rich, moist, well-drained soil. Dramatic in the woodland garden. Salvia splendens is a member of the Mint Family (Lamiaceae) and is indigenous to Brazil. Salvia ‘Wendy’s Wish’ (Wendy’s Wish Salvia) – An Australian salvia enthusiast, Wendy Smith, discovered this unusual seedling of undetermined parentage in her garden and realized its special qualities: vivid magenta-pink, tubular blossoms with fluted tips and bronzy red calyxes contrasted against green, glossy leaves on dark maroon stems. Spring through fall, ‘Wendy’s Wish’ produces abundant spikes of vibrant color on compact, slightly spreading plants reaching 2’ to 4’ high and spreading 2’ to 3’. Grow this member of the Mint Family (Lamiaceae) in full to partial sun in well-drained soil; very drought-tolerant once established. Wendy’s wish – part of the proceeds from this plant go to the Make-A-Wish Foundation. Sanchezia speciosa (Fire Fingers; Sanchezia) – A very dramatic and large accent for your summer plantings, maturing 5’ to 8’ in height with square reddish stems carrying beautifully variegated foliage. Handsome, 6” to 8” elliptical, green leaves have striking wide and well defined lemon-yellow veins, sometimes blushing red. When the plants are large enough, about 2’ or 3’ in height, long spikes carrying red bracts with 2” tubular, deep yellow flowers emerge and bloom all summer. Grow this native of Ecuador and northeastern Peru in bright, partial shade, keeping the soil moderately moist. Whether for its foliage or its flowers, sanchezia is a beautiful perennial for containers or as a focal point in the landscape. This member of the Acanthus Family (Acanthaceae) does best with temperatures above 55°F. Sanvitalia ‘Sunbini’ (Creeping Zinnia) – A creeping zinnia that features showy, 3/4” wide, yellow, daisy-like flowers held just above and beyond the foliage from late spring to mid fall. It's tomentose, narrow leaves remain dark green throughout the season. The 8” to10” tall and 18” to 30” wide plant is characterized by a compact, outwardly spreading and low-mounded plant habit, freely branching with short internodes. This version of creeping zinnia blooms even in triple digit heat. It trails nicely out of pots and baskets and can be used in the foreground of an annual bed or as an annual groundcover. Deadheading is not necessary for continuous bloom since the plant’s new flowers will quickly cover old flowers. Site this member of the Sunflower Family (Asteraceae) in full sun and provide a well-drained soil. 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 36 Selaginella kraussiana ‘Aurea’ (Golden Spikemoss; Golden Clubmoss) – Dainty, frilly and lush, the bright chartreuse-green foliage of golden spikemoss hints at a kinship with ferns, although the plant has its own family, Selaginellaceae, the Clubmoss Family; it is the sole genus in this family. This tender, tropical perennial, is a mat-forming or trailing plant native to sub-Saharan Africa. Its creeping stems hug the ground and root as they spread. The scalelike leaves are delicate and tiny, ranging from a light yellowish-green to bright chartreuseyellow, depending on how much bright light it receives. No flowers are produced, but this "fern ally" makes spores on small leafy spikes. Makes a beautiful carpet that lends itself to creating all kinds of interesting contrasts and brilliance in the garden or in containers. Grow as a miniature in a small pot or a hanging basket. Stems may root into the ground near the tips, and new plants can be started from these. Habit is low and spreading, 2” to 4” high and 12” to 18” wide. In Zones 6 and below Spikemoss is best overwintered in a container indoors; adapts well to terrariums. Selaginella uncinata (Peacock Spikemoss) – Close cousins to the true ferns, spikemoss forms a low creeping mat of feathery leaves. Plants prefer a rich, moist to wet soil and shady conditions. This species has unusual, metallic, blue-green foliage overlaid on a green background, creating a beautiful carpet. This iridescent groundcover roots into the ground near the stem tips, and new plants can be started from these. Native to South China, it is hardy outdoors up to about zone 6 and looks great in shady rock gardens, hugging and nestling among the stones, with bright metallic blue foliage in the summer and copper/bronze color in the fall. It can also be grown as a houseplant, adapting quite well to terrariums. Selaginella uncinata has very high water needs, appreciates a soggy, saturated soil, and cannot be allowed to dry out or the plant will quickly wither and perish. Spikemoss has moderate to low light needs and forms mats, rarely exceeding 2” to 3" in height. A member of the Clubmoss Family (Selaginellaceae). Senecio confusus (Mexican Flame Vine) – Mexican flame vine is a woody tropical vine with the enchanting summertime habit of covering itself in brilliant, daisy-like flowers. The bright orange blossoms are about 1” in diameter and are borne in small clusters. As they age the flowers change from orange to almost red. They are followed by fruiting structures that resemble smaller versions of the dandelion's puffy seed heads. This vine has thick evergreen leaves that are shaped like arrowheads, serrated on the edges. They are arranged alternately on the vine and are deep green in color providing a handsome background for the fiery orange flowers. The specific epithet, confuses, translates as "confused old man" referring to this vine's rampant habit of growth. If not provided support, Mexican flame vine grows this way and that in a confusion of stems that pile up eventually to form a sprawling shrub. However, compared to most other vines, the Mexican flame vine tends to be rather compact. It is usually grows less than 10’ in height and does not outgrow small gardens and yards. It is a great plant for beginners as it is drought-resistant and seldom bothered by pests. Best of all, even minimum care is rewarded with impressive floral displays. Senecio confusus is native to Mexico and a member of the Aster Family (Compositae). It relishes full sun to light shade, adapts to most any well-drained soil, and is drought tolerant once established. Senna alata (Empress Candle; Candle Bush) – The common names are derived because the erect flower spikes when in bud resemble yellow candles. It is also commonly called ringworm 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 37 cassia because the plant leaves were once used to treat ringworm. It is an evergreen tropical shrub or tree that typically grows to 12’ to 30’ tall in its native habitat. In the Delaware Valley it can grow rapidly to 6’ to 8’ tall in a single growing season. Features pinnately compound medium to dark green leaves to 30” long. Bright yellow, 5-petaled cup-shaped flowers bloom bottom to top in erect axillary racemes in fall. Flowers give way to winged bean-like seedpods (6”-8” long) which add ornamental interest. Container plants can be grown on patios in summer and overwintered in a greenhouse or sun room, but can be otherwise somewhat difficult to overwinter in a home. Overwintered plants should be watered very lightly in winter and then cut back in early spring to control size and shape. Formerly named Cassia alata. Setaria palmifolia var. rubra (Red Palm Grass) – Palm grass is an evergreen, tropicallooking grass with wide, accordion pleated leaves that are 1’ to 3’ long and 2’ to 5” wide, resembling the foliage of young palms. The plants form arching clumps of foliage 2’ to 3’ high and 2’ to 4’‘ wide. The leaves show off red central veins and arch out from deep burgundy, bamboo-like stems which lack the coarse hair of the green Setaria palmifolia. In late fall, cooler temperatures will turn older foliage red as well. Small, greenish flowers on tall wands rise several feet above the foliage. Plant in full sun to light shade. Palm grass prefers moist soils and can be planted at the edge of lakes and ponds where it will thrive. Provides a bold textural accent to mixed containers or use singly in a beautiful urn. Amazingly, palm grass is also happy growing in dry shade and established plants are relatively drought tolerant. This native of India is a member of the Grass Family (Poaceae). Solanum jasminoides ‘Variegata’ (Variegated Potato Vine) -- Potato vine is a vigorous tender, twining climber native to Brazil. This selection produces richly variegated, yellow-gold and green foliage which clothes the thin stems; the leaves are lance-shaped, sometimes with a few lobes, and shiny. Abundant clusters of fragrant blooms grace this scrambler throughout the growing season, spring through first frost. They are produced near the ends of the branches in the leaf axils and are white, star-shaped with yellow centers. This vine is worthy of much greater use as an ornamental vine, but growth may need to be checked periodically to keep the vine from growing out of bounds and over adjacent shrubs. It is an excellent vine for chain-link fences because the stems of the vines can be easily threaded throughout the links of the fence. Let potato vine scramble through a large shrub, cascade from a hanging basket or urn, or grow in the garden on a tuteur. Potato vine prefers well-drained soil and full sun. It is drought-tolerant once established but grows and flowers best with regular irrigation during dry weather. This vine climbs by twining around support and benefits from help in directing the branch growth. It is a member of the Potato Family (Solanaceae) will grow 8’ to 10’ in a single season. Solanum pyracanthum (Porcupine Tomato) – Attractively wicked! Fuzzy, bluish-green lobed leaves held on furry orange stems display festive orange-red midribs and fiendish upright thorns. In addition, it holds its deeply toothed foliage horizontally in a way that highlights the spines perfectly, especially if they are set against a dark background. Summer brings bright purple clusters of 1”, tomato-like flowers adding the perfect color contrast to the orange stems. The flowers are followed by rounded, yellow berries which are edible but very bitter and usually do not ripen before frost. It matures to a branching, upright to somewhat open, 3’ high and wide specimen/conversation plant and looks stunning when grown over a ground2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 38 cover of deep purple sweet potato vine, such as Ipomoea batatas ‘Sweet Caroline Bewitched Purple’. Full sun in well-drained soil with a bit of compost added are the perfect growing conditions. This native to Madagascar is a member of the Potato Family (Solanaceae). Solanum quitoense (Naranjilla) – The frighteningly prickly yet architecturally appealing naranjilla has fuzzy, olive green leaves and yellow stems covered with slender, purple-red, thorny protrusions. The spectacular leaves can grow to an amazing 18” long and about as wide. New leaves are covered with a soft purple pubescence and when they mature, the burgundy leaf veins become more pronounced and are studded with little purple thorns. Both the white flowers and fuzzy, round, edible, bright orange fruits are usually obscured by the large lobed leaves. Endemic to the mountains of Peru and Ecuador, this shrub to small tree matures to around 10’ high, but expect around 3’ in the Delaware Valley. Grow it in the summer garden as a decorative element where it will add a tropical flair to beds and containers. Protect this member of the Potato Family (Solanaceae) from strong winds and long hours of direct sunlight; prefers moist, well-drained, fertile soil. Even though the spines are not dangerously sharp, it is best to place it away from pedestrian traffic or child play areas. Its Spanish common name, naranjilla, means "little orange" which is round, 2-1/2” in diameter, and bright orange when fully ripe. SOLENOSTEMON (Coleus) – This genus of perennial plants, native to tropical and subtropical areas of Africa and Southeast Asia, is commonly known as coleus, a name that derives from an earlier classification under the genus name Coleus. These members of the Mint Family (Lamiaceae) are prized for their highly colorful foliage, often variegated and blotched with a rainbow of color combinations. New introductions appear yearly giving us unending color variations as well as selections for increased sun and heat tolerance. Coleus varies from smaller types that will trail and only reach 1’ high to tall, bushy types of 3’ or more. They have square, succulent stems and nettle-like leaves. The spikes of lavender-blue flowers have little importance and should be pinched out as they appear, prolonging the plant’s life and keeping it bushy. Very few coleus cultivars need protection from the sun and most require a good amount of sun to develop their colorful palettes. Pastel colors will need bright shade. Coleus grow well in moist, well-drained soil with added organic matter and are outstanding when grouped in clay pots to highlight patios, walkways, porches, and garden terraces. Occasional pinching will ensure it remains well-branched and not leggy. Solenostemon ‘Alabama Sunset’ – One of the most popular coleus, 'Alabama Sunset' is true to its name with all the rich colors of a sunset. The emerging leaves are a mellow creamy-yellow and mature to a warm, soft apricot pink, sometimes mottled with yellow. The effect of both the young and older foliage together gives this plant its name. It grows quickly as an upright to mounding, compact shrubs .to around 15” to 24” tall and 18” to 24” wide. Other names in the trade include 'Shocking Pink' and 'Texas Parking Lot'. Solenostemon ‘Bryce Canyon’ – This brilliantly colored coleus has the glowing deep coralorange coloration of a southwest sunset, consisting of shades of mottled orange, peach, and burgundy. A bushy, well-branched plant reaching 15” to 20” tall and 15” to 20” wide. 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 39 Solenostemon ‘Inky Fingers’ – This sun-tolerant coleus forms a densely branching, 16” to 20” spreading mound of deeply fingered, duckfoot-shaped foliage. The 1” long leaves are irregularly and deeply lobed with dark purple central markings and margined with electric lime. Contrasts so well with Ipomea ‘Dwarf Marguerite’. Solenostemon Kong® Mosaic – Looking for a coleus to grow in shade to partial shade, Kong® Mosaic will show off its most intense coloration when grown under these conditions. It features huge, deep green leaves that are randomly and flamboyantly splashed with purple, cherry red, green, and yellow. This well-branched, mounding plant is an eye-catching choice for large containers as well as in garden beds. A plant that truly lives up to its name reaching 18” to 20” high and 15” to 18” wide. Solenostemon ‘Peter’s Wonder’ – In the world of coleus, it seems that being over the top is the goal of each new cultivar that is introduced. 'Peter's Wonder' manages to stand out from the pack with its very frilly foliage (almost like a cabbage) that is a mix of bright green, yellow, violet, and pink. It continues the parade of colors with cream veining and magenta-pink splotching, which is repeated in highlights along the leaf edges. In bright light the whole leaf can develop a pink glow. A very over the top, upright cultivar growing to 15” to 20” high and 12” to 15” wide. Solenostemon ‘Religious Radish’ – A coleus with warm reddish pink foliage that is flushed with deep purplish black markings; foliage is large and pointed. If sited in full sun, the colors explode! A tall cultivar, upright in habit, and reaching 24” to 42” high. Interplant with blackleaved cotton (Gossypium herbaceum 'Nigra'). Solenostemon ‘Sedona’ – This coleus is characterized by its upright, outwardly spreading, and mounding habit reaching 24” to 30” tall and spreading 18”. The warmly colored leaves are a deep rusty-orange with hints of rose and burgundy – all the colors of a southwestern desert at sunset. The undersides of the leaves are a rich plum color. Solenostemon ‘Smallwood’s Driveway’ – Found growing in a driveway at a nursery in Virginia, this attractive coleus possesses scalloped, pointy leaves that emerge green in spring, and turn yellow with showy green variegation and tinges of red the rest of the year. It’s an upright, bushy grower to about 18” tall at maturity, with a spread of 12”. Strobilanthes dyerianus (Persian Shield) – A stunning plant with extraordinary foliage. Persian shield has thick, 6” long, deeply quilted purple leaves with dark green veins and margins splashed all over with an iridescent silver. The leaf undersides are deep purple. In fall spikes of delicate, funnel-shaped, violet flowers appear, however it is prudent to pinch these flowering spikes off to keep the foliage looking its best. Site in bright indirect light for optimum leaf growth and coloration. Water thoroughly and allow the soil to dry out a bit between watering. Pinching off its stem tips in spring and early summer will encourage branching and create a bushier plant. Persian shield is a native of Burma (officially known as Myanmar), a member of the Acanthus Family (Acanthaceae), and will reach 2’ to 3’ tall. 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 40 Talinum paniculatum 'Variegatum' (Jewels of Opar) – The variegated form of Jewels of Opar has clean, creamy-white-edged foliage, handsome enough alone, but especially nice when set off by the wiry reddish stems topped with dainty pink flowers. It features delicate racemes of pink flowers rising above the foliage which emerge from distinctive hot pink flower buds in mid-summer. The fruit is not ornamentally significant. The brick red stems are very effective and add winter interest. Reaches a mature size of 12” high and 12”wide. Grow in well-drained soil with some water and lots of sun. Makes a wonderful plant companion in rock gardens, border edgings, mass plantings, as well as container plantings. Talinum paniculatum is a member of the Fameflower Family (Talinaceae) and is native to Central and South America. Tibouchina grandiflora (Silver-leafed Princess Flower; Glory Bush) – The silver-leaved princess flower steals the show wherever it is used. In its native Brazil this shrub has an upright growth habit reaching 8’ to 10’ tall and 4’ to 5’ wide. Fuzzy, silvery-green, 4” to 6” long leaves show off their highly prominent veins; old leaves will often turn a beautiful orange just prior to dropping off. Bright purple, 1-1/2” wide flowers are produced on large panicles with dozens opening at once, blooming from mid-summer until fall. Provide this member of the Melastoma Family (Melastomataceae) with full sun for best color and maximum flowering and in rich, fertile, moist, well-drained soil. The handsome foliage adds texture and interest to shrub borders, foundation plantings and containers while delivering splashes of color. TILLANDSIA (Air Plants; Tillandsia) – Air plants are without a doubt one of the world’s most amazing group of plants. They have developed the ability to take all their food and water through specially designed cells (trichomes) on their leaves and therefore can exist without any roots. The small roots they do have are used to attach themselves, mostly to the bark of trees and nothing more; air plants are called epiphytes (Greek, epi meaning upon and phyte meaning plant). They prefer bright light and airy conditions; a few may even take full sun. In general, they have alternating stiff or leathery, strap-shaped leaves. Plants are often, but not always, clump-forming and have neat rosettes of foliage, ranging from bulbous forms and grass-like structures to silver-tufted masses. The pendulous Spanish moss (Tillandsia usneoides) is a unique form with delicate, curled strands of foliage which make it look less like a plant and more like lichen. Leaf color varies from silver to many shades of green blushed with other bright colors. Air plants are indigenous to a number of dissimilar climates, ranging from deserts to mountains and forests, from southeastern United States to South America. With nearly 400 species, this genus is the largest and most diverse in the Pineapple Family (Bromeliaceae). The genus Tillandsia was named by Carolus Linnaeus to honor Dr. Elias Tillands (1640-1693), a Finnish-Swedish botanist who reportedly had an irrational fear of water. It was once thought these largely tree-dwelling bromeliads also disliked water but this was later found to be inaccurate. Care: Thoroughly wet your Tillandsia two to three times per week, more often in a hot, dry environment, less often in a cool, humid one. Do not allow to sit in standing water. Spray misting is insufficient as the sole means of watering but may be beneficial between regular watering in dry climates. They must be given protection from any freeze, but a light frost will not usually damage them. The greener and softer varieties like a little more water and shade, while the silvery and stiffer ones need less water and will take more sun. After blooming, the 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 41 parent plant slowly dies but produces offsets (pups) that grow on into new plants. Mount them on driftwood, on trees, in shells, funky containers, unusually shaped rocks, basically anything that appeals to you. You can mount them with glue, even hot glue works well, wire, staples, twist ties, etc. For further information on bromeliads see listing: Bromeliads. Tillandsia aeranthos ×stricta – This spikey plant has such a fun shape, with its pointy arms sprouting up and out in all directions. Forms rosettes of smooth, shiny, and bright bluish green leaves that turn to blush purple as it prepares to bloom. In bloom it develops incredibly vibrant magenta and purple flowers. This slow grower will form clumps consisting of the mother plant surrounded by pups (baby plants). Reaching a height of 6” to 8” high and 6” to 8” wide, this is a hybrid between two well-known species: Tillandsia aeranthos and Tillandsia stricta. Like many hybrids, this plant has a floral morphology and growth characteristics midway between both parents. Tillandsia velutina – A venerable species from Guatemala that has been around for a long time because, unfortunately, it's one of the most easily collected plants from nature. It was known for many years as T. brachycaulos v. multiflora. It consists of an open rosette of velvetlike, silvery leaves curving out of its base in wide arcs; the silver color is due to the large number of trichomes that densely cover the leaves. The 6” to 8”-long leaves take on a strong red tint when the plant blooms, however if given full sun it will blush year round. A flowering stalk, emerging from the rosette center, produces red bracts and purple flowers. Tillandsia bulbosa Belize Form – Quite colorful when just about to flower: the entire plant becomes a cherry red as the flower stem emerges carrying bracts that also color-up a bright red from which purple, tubular flowers emerge. Hummingbirds flock to this colorful sight in the canopy of trees. This air plant has long, twisting and contorted, cylindrical, bright green (before flowering) leaves that grow from a large bulbous base. Matures to about 5” tall and 6” wide and after blooming produces many offsets. Native to Belize, Central America where it is found clinging to shrubs and trees, growing horizontally or upside down. Prefers medium light and high humidity. Tillandsia capitata ‘Peach’ – This upright air plant develops numerous curved and leathery, grayish green leaves which rise to over 1’ tall. When about to bloom the center foliage of the rosette turns a soft peach color. The inflorescence emerges as a large capitate (head-shaped clusters) inflorescence with blushing, bright peach bracts lasting a long period. Fairly common in wet canyons and in tropical deciduous forest, usually growing on rock faces and sometimes on trees. The species is quite variable throughout its range which extends from the southwestern US through Mexico to Guatemala and the Caribbean islands. Tillandsia concolor – An epiphytic plant from central and southern Mexico, growing along the coast as well as up to 4,000 feet above sea level. It forms a stemless, spreading rosette that can grow to 7” tall and 12” wide. The stiff leaves range from grey to green to bright yellow to neon pink, the stronger the light becomes. When exposed to full sun this strong pink tint combined with the yellow hue of the foliage is quite colorful. The floral bracts are usually bright cherry and green and the flower petals are unusual in that they are a bright ruby red 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 42 and the bracts last for months. Another Tillandsia that thrives in full sun and pups generously, eventually becoming a huge cluster. Tillandsia edithae – A native to the breath-taking scenery of the high Andean peaks of Bolivia where it can be found clinging to precipitous cliffs. The yellow-green, simple leaves are arranged in rosette fashion around the stem. It is one of the few tillandsias to have coral redcolored flowers which occur in a head-shaped inflorescence. It produces a lot of offsets (pups) along the base of the stem between the leaves. Mature size: 4” to 6” long and 5” in diameter. Grow in bright light and it will thrive as long as it is not in damp, dark conditions. Tillandsia ‘Eric Knobloch’ – ‘Eric Knobloch’ is a venerable hybrid of Tillandsia brachycaulos and T. streptophylla that was made by Joe Carrone in New Orleans in the 1960s and named to honor Eric Knobloch, a Louisiana collector and grower. It is one of the most beautiful hybrids. It favors the streptophylla parent having a thick leafy scape that is erect and straight with the inflorescence forming a tight head of flowers (sepals are green to rose red w/deep blue to violet petals). The upper half of the plant blushes yellow-orange then orange-scarlet then a frosty, deep rosy-red at the onset of flowering. Mature size: 5” high and 8” to 10” wide; it thrives under high light intensity. Tillandsia fasiculata – Commonly called the Cardinal Flowered Air Plant this plant has a striking, large, upright rosette composed of many narrow leaves. The stiff leaves are thick to almost succulent, silvery-green and curving inwards toward their tips. The inflorescence is very large with colorful, 8 to 10 branched spikes of green and orange to red and yellow with pale violet flowers. The common name refers to the inflorescence’s bracts, which appear as a beacon of cardinal red from a distance. Mature size: 10” to 12” tall and 8” to 10” wide. It is native to the USA (Florida), Mexico, Costa Rica, and Venezuela. Tillandsia harrisii – The species harrisii was named after an American air plant enthusiast, Bill Harris, who was ruthlessly murdered in Guatemala in 1985. It has a relatively long stem, with the leaves usually directed to one side, and curled in a dense rosette; the leaves are a silvery soft green and contrast beautifully with its bright red, cylindrical spike with red bracts and purple flowers. The inflorescence is comprised of five to nine spirally arranged flowers, with orange to red floral bracts and blue-violet petals. Considered an endangered species, it is rather rare in nature but very commonly cultivated. Tillandsia harrisii is listed on Appendix II of the international CITES Agreement which means that trade in this species must be accompanied by a Federal Form A certificate that shows that the plant was produced artificially and not collected from nature. Especially easy to grow and a confidence builder for beginners. Mature size: 8" tall and 10" wide. Prefers bright light. Tillandsia juncea – A tall species with numerous, long, bright green-tinged copper, needlelike leaves. These rush-like leaves with silver scales and brown bases form an upright, compact clump which grows into a graceful rosette. With age T. juncea forms massive clumps with offsets growing on woody stolons. However, it is very slow growing, the offsets usually take 2 to 3 years to mature, and the tall, slender bloom spike develops for almost a year before flowering commences. This species is widely distributed, growing from northern South America, Central America, Mexico and the West indies. It has a short, erect inflorescence with 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 43 bracts that are brilliant red and the petals a royal purple. Mature size: 10” to 15” tall and 4” to 8” wide. Prefers indirect sunlight. These air plants are a favorite for tall vases and flourishes when mounted in any position, even upside down. Tillandsia leonamiana ×stricta – An incredible hybrid that grows to be much larger than either parent with many more leaves and a huge, colorful inflorescence. Foliage is silvery with recurved 4 to 6 inch leaves and an inflorescence with bright orange-red bracts and white, tubular flowers. Mature size: 6” to 8" tall and 8” to 12" across. Tillandsia xerographica – A spectacular, most sculptural plant, the name meaning “dry painting.” This impressive specimen has a rosette of spiraling growth with leaves 12” to 18” long. The silvery gray to almost white leaves are wide at the base and taper to a curving point. The inflorescence rises 6” to 15” high, densely branched with rosy red leaf bracts, chartreuse floral bracts and red to purple tubular flowers. Mount at an angle to prevent water from collecting in the crown and to enjoy fully its beautiful shape. Very slow growing and easy to care for. It copes well with plenty of rain in summer, but during the winter prefers drier conditions. It requires bright light to full sun and good air movement. This magnificent species, now listed as endangered by C.I.T.E.S, is native to oak woodlands, seasonally dry forests, and deserts of Central America. Mature size: 6” to 18” tall and 6” to 15” wide. One of the most popular of the tillandsias. Tillandsia (mounted on slate) – Here’s how to repurpose old slate roofing from Swarthmore College’s beautiful buildings: we adorned the weathered, grey slate tiles with varying species of Tillandsia. Mount the slate outdoors on a partly sunny wall, fence, or tree and give it a spray of water once a day. Vriesea ‘Mint Julep’ (Flaming Sword) – A stunning epiphyte and cultivar of an old hybrid of Vriesea barilletii x intermedia that has become a very popular yet still uncommon plant in collections. The rosette of leaves starts out a light mint green with deep green to brownish tessellations (a mosaic checkered pattern) covering both sides of the glossy leaves. As leaves mature, the colors darken a bit but the bold pattern stays vivid. The smooth, margined leaves are 10” to 15” long, 1-1/2” wide, and will blush rosy red when grown in strong light. The inflorescence rises well above the rosette of foliage and consists of a purple, sword-like, branched spike which will last for several months. Great for a large container or sited into the landscape. Mature size: 20" tall and 30" wide. Prefers bright light in moderately moist soils during the summer and in winter keep warm and do not over water. For additional information on this member of the Pineapple Family (Bromeliaceae) see listing: Bromeliads. **************************************************************** ORGANIC MECHANICS® Container Blend Potting Soil. We are also offering potting soil specifically blended for containers. Mark Highland, Founder and President of Organic Mechanics®, a Delaware Valley small business, states “being kind to the planet is a core belief in our company.” His description is as follows: “The 100% organic potting soil of choice for repotting plants, container gardening, and more! At Organic Mechanics, we’re passionate about all natural, sustainable gardening that provides superior 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 44 results. That’s why our soil products are 100% organic, completely peat-free. Contains: compost, pine bark, coir, and worm rice hulls. Excellent drainage properties, yet holds moisture well. Use for large containers: 2 to 100 gallons. Perennials and woody plants love it! Add your favorite organic fertilizer at planting time. Used by professional gardeners at arboretums and botanic gardens including Longwood Gardens, Scott Arboretum, Chanticleer Garden, etc. Reuse it! Our compost-based soils do not break down as quickly as peat-based mixes. Simply fluff the mix back up, remove any large root balls, and replant.” 2015 Unusual Tropicals and Annuals Sale: May 15 to 16 http://www.scottarboretum.org/TropicalSale/ 45