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Download Pereskia aculeata - Big Island Invasive Species Committee (BIISC)
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Transcript
SOLUTION The BIISC field crew will remove this plant for you if you wish to grant them permission to access your property. Simply call the BIISC office (933-3340) to schedule an appointment for eradication. If you wish to remove this plant yourself, we recommend using a foliar method, spraying all of the visible foliage of the plant with an herbicide for woody plants, like Garlon®. Beware, any piece of this plant that comes in contact with the ground will root. EARLY DETECTION NOTICE HO‘ĀLA I KA MAKA Restoring the Land Awakening the People BARBADOS G O O S E B E R RY Big Island Invasive Species Committee 23 E. Kawili St Hilo, HI 96720 Office: 808-933-3340 Fax: 808-933-3326 E-mail: [email protected] (Pereskia aculeata) Why this plant is a concern for Hawai‘i Barbados gooseberry (Pereskia aculeata)is a vining cactus that forms large impenetrable thickets that are very hard to control because of the plant’s extreme thorniness. Once this plant has a chance to establish in the soil, it seeks out the trunk of a nearby tree and gradually climbs up to form dense thickets in the branches and canopy. A large infestation in Halawa valley on Moloka ‘i shows this plant’s potential to be a major pest in Hawaii. South Africa also has large infestations in native forest and is looking at bio-control possibilities. Barbados gooseberry is so resilient that it can regrow from pieces of stem and even detached leaves. Besides vegetative dispersal, people spread this plant around because of its use as a living fence. The fruit is eaten by birds and most likely pigs. Description human impact Pereskia aculeata is in the Cactus family and is native to the Caribbean islands. It is a scrambling vine growing up to 33 feet in trees, with stems 1–2” thick. Younger stems have hooked thorns and older stems have clusters of woody spines. The leaves are 1.5-4” long and .5-1.5” broad, simple, entire, succulent and lack any visible veins. The strongly scented flowers are white, cream or pinkish, 1-2” diameter, and numerous. The fruit is a rounded berry, translucent white to pink, yellow, orange or red, and 1” diameter. The fruit is edible, containing numerous small seeds. Barbados gooseberry is such an atrocious plant that it was banned in South Africa as an illegal weed because it was invading and overwhelming native vegetation. Barbados gooseberry has the potential to choke out our native forests. The resilience of this plant added with its destructive potential makes this plant one of the worst plants to set root in Hawaii. Barbados gooseberry can be found on the islands of Moloka‘i, Oahu and in North Kohala on the Big Island.