Allium Constrictum, or more commonly know as Grand Coulee Onion, is a forb/herb (a forb/herb is a non-woody plant that is not a grass) of the genus Allium. Its duration is perennial which means it will grow year after year. Allium Constrictum or Grand Coulee Onion's floral region is North America US Lower 48, specifically in the state of Washington.
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