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Firecracker Penstemon Provide Explosive Color and Drought Tolerance By Michael Berniger, Colorado Master Gardener What is it: Firecracker Penstemon (Penstemon eatnoii) also commonly know as ‘Beardtongue’ Appearance: Firecracker Penstemon is a perennial native of the Desert Mountains of the southwest. It can grow between 10” to over 3’, and 1’ to 3’ wide. Its bright, tubular shaped scarlet flowers hang from arching stems. The lance shaped blue-green leaves have a leathery texture. Bright flowers occur in profusion with up to 30 blooms on a single stalk, with the flowers hanging like pendants. The name ‘Beardtongue” comes from the appearance of the bloom, which has an infertile stamen among the flower petals that protrudes and looks like a hairy tongue. Bloom time is from May to mid-July, and may last up to six weeks as new flowers continue to open along the stem. Many different species of Penstemon are suitable to grow in Colorado and other colors include blue, dark purple, pink and white. For a listing of different Penstemon that will do well Colorado, please view the CSU Extension office’s fact sheet “Native Herbaceous Perennials for the Colorado Landscape” at www.ext.colostate.edu/pubs/ garden/07242.html. Use in the Landscape: Penstemon will provide vibrant color to the low water, sustainable landscape. These native herbaceous perennials are naturally adapted to the climate, soil and environmental conditions of Colorado. They can be grown as a single specimen, or in mass groupings for a greater effect. Firecracker Penstemon’s stems slowly arch and spill out from their base, making them valuable for use in rock gardens and over sidewalks. Use the vibrant colors of the Penstemon to create dramatic contrasts with other native perennials. The bright tubular flowers are a favorite nectar source for bees, butterflies and birds. Hummingbirds are especially attracted to the flowers and have been known to stake out their own territory and will defend a particularly sweet patch of blooms. Cultivation: Firecracker Penstemon prefers full sun and well-drained soils, as do most Penstemon. It is drought tolerant once established and can tolerate poor soils, but over-watering and excessive fertilization may cause damage to the plant. Planting in the correct site and making sure of proper drainage will extend the life and health of your plant. Vibrant color, drought-tolerance, and general hardiness make the Firecracker Penstemon an ideal choice for the Colorado garden. With good plant placement, soil preparation and water-wise management, Penstemon will prove to be a natural beauty for many years. When you have questions, your Colorado State University Extension office has research-based answers. For answers to your horticultural questions, contact the Colorado Master Gardener Help Desk at 520-7684 or email [email protected]. Extension Programs are available to all without discrimination.