Potamogeton Zosteriformis, or more commonly know as Flatstem 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 summer, blooms during mid summer, is intolerant of shade and is routinely available commercially. Potamogeton Zosteriformis or Flatstem Pondweed's floral region is North America US Lower 48 and Alaska, specifically in the states of Alaska, California, Connecticut, Iowa, Idaho, Illinois, Indiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Montana, North Dakota, Nebraska, New Hampshire, New Jersey, New York, Ohio, Oregon, Pennsylvania, South Dakota, Utah, Virginia, Vermont, Washington, Wisconsin and Wyoming.
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