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Also known as Polygonum sachalinense. It is native to northeastern Asia and northern Japan. The flowers are a greenish-yellow color, with long-pointed ovate leaves.

Giant Knotweed

Also known as Polygonum sachalinense. It is native to northeastern Asia and northern Japan. The flowers…

Also known as Polygonum cuspidatum. It has hollow stems and has a similar appearance to bamboo. The flowers are small and white, and the leaves are in the shape of an oval.

Japanese Knotweed

Also known as Polygonum cuspidatum. It has hollow stems and has a similar appearance to bamboo. The…