Juncus Mertensianus, or more commonly know as Mertens' Rush, is a graminoid with green foliage and purple flowers of the genus Juncus. It has a moderate growth rate and a height of 0.9 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 somewhat tolerant of shade. Juncus Mertensianus or Mertens' Rush's floral region is North America US Lower 48 and Alaska, specifically in the states of Alaska, Arizona, California, Colorado, Idaho, Montana, New Mexico, Nevada, Oregon, South Dakota, Utah, Washington and Wyoming.
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