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Malheur Experiment Station
Oregon State University

Polygonum cuspidatum

Japanese knotweed (Polygonum cuspidatum) Polygonum cuspidatum
Common Names Japanese knotweed
Family Buckwheat
Plant Type Forb
Weed Yes

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

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

For additional information please send an e-mail request to:
Dr. Clinton C. Shock
Clinton.Shock@oregonstate.edu

Malheur Agricultural Experiment Station
595 Onion Avenue
Ontario, OR 97914
(541) 889-2174
FAX (541) 889-7831

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