Land Plants - invasive

Knotweed (species unknown) (Fallopia spp.) on Apr 23, 2025

Originally reported as Japanese Knotweed (Fallopia japonica)

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

Description of specimen

massive clump spreading out

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

Japanese knotweed next to an apartment complex

Expert Reviewer

Beth Thiel
Polk Soil and Water Conservation District

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