Epilobium Leptophyllum, or more commonly know as Bog Willowherb, is a forb/herb (a forb/herb is a non-woody plant that is not a grass) with green foliage and red flowers of the genus Epilobium. It has a slow growth rate and a height of 3.6 feet at maturity. Its duration is perennial which means it will grow year after year. It's active growth period is spring, blooms during summer, is somewhat tolerant of shade and is routinely available commercially. Epilobium Leptophyllum or Bog Willowherb's floral region is North America US Lower 48 and Alaska, specifically in the states of Alaska, California, Colorado, Connecticut, Iowa, Idaho, Illinois, Indiana, Kentucky, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Montana, North Carolina, North Dakota, Nebraska, New Hampshire, New Jersey, New Mexico, Nevada, New York, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Dakota, Tennessee, Utah, Virginia, Vermont, Washington, Wisconsin and Wyoming.
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