Land Plants - invasive

Giant Knotweed (Fallopia sachalinense) on Jul 3, 2026

Description of specimen

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

Large leaves with heart shaped base and small hairs on ribs/veins

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

Partially on street side of fence and partially in backyard

Expert Reviewer

Avatar of Reviewer

Tyler Pedersen
Tualatin Soil and Water Conservation District

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