Nassella Viridula, or more commonly know as Green Needlegrass, is a graminoid with green foliage and yellow flowers of the genus Nassella. It has a rapid 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 late spring and is intolerant of shade. Nassella Viridula or Green Needlegrass's floral region is North America US Lower 48, specifically in the states of Arizona, California, Colorado, Iowa, Idaho, Illinois, Minnesota, Montana, North Dakota, Nebraska, New Mexico, New York, South Dakota, Utah, Wisconsin and Wyoming.
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