Land Plants - invasive

Bohemian Knotweed (Fallopia x bohemica) on Apr 16, 2026

Submitter does not have a specimen
EDRR Status: Local expert notified

Description of specimen

Big stands of knotweed on the riverbank. Not sure which exact subspecies. Sorry, I do not have photos.

Commentary

None

Remedy

Oregon State University's Solve Pest Problems page has some great information about how to get rid of knotweeds Solve Pest Problems

Information on identifying and controlling Bohemian Knotweed from the Washington State Noxious Weed Board

This is a tricky weed to manage. Consider reaching out to your local Soil & Water Conservation District for technical advice.

Location

South bank of the Clackamas river

Expert Reviewer

Avatar of Reviewer

Samuel Leininger
Clackamas Soil and Water Conservation District
4-County Cooperative Weed Management Area
Columbia Gorge Cooperative Weed Management Area

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