Achnatherum Thurberianum, or more commonly know as Thurber's Needlegrass, is a graminoid with gray-green foliage and yellow flowers of the genus Achnatherum. 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 intolerant of shade and is routinely available commercially. Achnatherum Thurberianum or Thurber's Needlegrass's floral region is North America US Lower 48, specifically in the states of California, Colorado, Idaho, Montana, Nevada, Oregon, Utah, Washington and Wyoming.
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