Potamogeton Gramineus, or more commonly know as Variableleaf Pondweed, is a forb/herb (a forb/herb is a non-woody plant that is not a grass) with green foliage and green flowers of the genus Potamogeton. It has a rapid growth rate and a height of 0 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, is intolerant of shade and is routinely available commercially. Potamogeton Gramineus or Variableleaf Pondweed's floral region is North America US Lower 48 and Alaska, specifically in the states of Alaska, Arizona, California, Colorado, Connecticut, Iowa, Idaho, Illinois, Indiana, Kentucky, Massachusetts, Maryland, Maine, Michigan, Minnesota, Montana, North Dakota, Nebraska, New Hampshire, New Jersey, New Mexico, Nevada, New York, Ohio, Oregon, Pennsylvania, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin and Wyoming.
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