Scirpus Microcarpus, or more commonly know as Panicled Bulrush, is a graminoid with green foliage and white flowers of the genus Scirpus. It has a rapid growth rate and a height of 5.5 feet at maturity. Its duration is perennial which means it will grow year after year. It's active growth period is spring summer fall, blooms during late spring and is intolerant of shade. Scirpus Microcarpus or Panicled Bulrush's floral region is North America US Lower 48 and Alaska, specifically in the states of Alaska, Arizona, California, Colorado, Connecticut, Iowa, Idaho, Illinois, Kentucky, Massachusetts, Maine, Michigan, Minnesota, Montana, North Dakota, Nebraska, New Hampshire, New Jersey, New Mexico, Nevada, New York, Oregon, Pennsylvania, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin and Wyoming.