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Green Roof Plant Blog

Arabis hirsuta

Thursday, March 27, 2014


This short-lived perennial, also known as the Hairy Rockcress is a member of the Brassicaceae or mustard family. Rooted firmly by a taproot, it will grown anywhere from 8 to 25 inches tall. The stem and leaves are covered in a fine peach-like fuzz, hence the name hirsuta, meaning with hair in Latin. Blooming in late spring, usually around June, Arabis hirsuta has pinkish-cream colored flowers. These flowers grow in clusters, with four petals each. This plant has a weed-like tendency, and will sprout after a disturbance. Although this plant prefers full sun and well-drained soils, it is very stress tolerant and drought tolerant. The Hairy Rockcress relies mainly in bees, butterflies, moths and other various insects for pollination.


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