Land Plants - invasive

Japanese Knotweed (Fallopia japonica) on Apr 25, 2026

Submitter has sample
EDRR Status: Local expert notified

Description of specimen

Just back from the river bank behind the Wallace house there are a handful of knotweed shoots coming up sporadically.

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

Alone the river bank there are a few Japanese knotweed plants

Expert Reviewer

Avatar of Reviewer

Sarah Hamilton
Marion Soil & Water Conservation District

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