Land Plants - invasive

Japanese Knotweed (Fallopia japonica) on Aug 31, 2026

Description of specimen

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

Red stems, more or less heart shaped leaves.

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

Path at dead end intersection of Flanagan and S Schoeneman. Approx 100 feet up next to guardrail. JAPANESE KNOTWEED about5 square feet patch, adjacent to runoff ditch

Expert Reviewer

Avatar of Reviewer

Carri Pirosko
Oregon Department of Agriculture's Noxious Weed Program. Josephine CWMA, Jackson CWMA, and Douglas CWMAs.

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