Polygonum is a genus of around 130 species in the buckwhear and knotweed family Polygonaceae and are also known as Fallopia. They are more commonly known as knotweed or knotgrass.
Polyganum is an extremely fast growing plant making it ideal for covering unsightly structures or a wall but must be grown with some caution due to its rampant nature. Flowers bloom in summer in clusters.
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