Land Plants - invasive

Japanese Knotweed (Fallopia japonica) on Mar 28, 2025

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

Description of specimen

Two larger infestations and up to five smaller ones

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

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

Location

Knotweed is in a few locations on my property, including this pinpoint on a creek side, on S Graves Rd.

Expert 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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