Frangula Purshiana, or more commonly know as Cascara Buckthorn, is a tree shrub with dark green foliage and white flowers of the genus Frangula. It has a slow growth rate and a height of 35 feet at maturity. Its duration is perennial which means it will grow year after year. It's active growth period is spring and summer, blooms during mid spring, is tolerant of shade and is routinely available commercially. Frangula Purshiana or Cascara Buckthorn's floral region is North America US Lower 48, specifically in the states of California, Idaho, Montana, Oregon and Washington.
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