Polygonum Pensylvanicum, or more commonly know as Pennsylvania Smartweed, 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 Polygonum. It has a moderate growth rate and a height of 3.9 feet at maturity. Its duration is annual which means it grows for one season only. It's active growth period is summer, blooms during spring and is intolerant of shade. Polygonum Pensylvanicum or Pennsylvania Smartweed's floral region is North America US Lower 48 and Alaska, specifically in the states of Alaska, Alabama, Arkansas, Arizona, California, Colorado, Connecticut, Delaware, Florida, Georgia, Iowa, Illinois, Indiana, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Hampshire, New Jersey, New Mexico, Nevada, New York, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Virginia, Vermont, Wisconsin and Wyoming.
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