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Polygonum cuspidatum

Japanese knotweed (Polygonum cuspidatum) Polygonum cuspidatum
Common Names Japanese knotweed
Family Buckwheat
Plant Type Forb
Native No
Weed Yes

Japanese knotweed (Polygonum cuspidatum) Japanese knotweed (Polygonum cuspidatum)

Japanese knotweed increases in area very rapidly and soon forms monoculture stands.