Land Plants - invasive

Japanese Knotweed (Fallopia japonica) on Sep 23, 2026

Description of specimen

Submitter does not have a specimen
EDRR Status: Population assessed

Large patch of japanese knotweed next to path and growing down to the water.

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

Along the river bank at the north end of the Canby Logging Trail

Expert Reviewer

Avatar of 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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