Land Plants - invasive

Japanese Knotweed (Fallopia japonica) on Sep 3, 2024

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

Description of specimen

Large flowering clump probably 8’ tall and 8x8 clump. This is a house on my neighborhood.

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- There’s a tall flowering patch of it at the SW corner of 2460 Tulane st in West Linn. I just saw it while walking by. There’s a similar patch on a house along hwy almost exactly west of it.

Expert 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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