Delphinium Andersonii, or more commonly know as Anderson's Larkspur, is a forb/herb (a forb/herb is a non-woody plant that is not a grass) with green foliage and purple flowers of the genus Delphinium. It has a moderate growth rate and a height of 2 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. Delphinium Andersonii or Anderson's Larkspur's floral region is North America US Lower 48, specifically in the states of California, Idaho, Montana, Nevada, Oregon and Utah.
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