Land Plants - invasive

Japanese Knotweed (Fallopia japonica) on Jun 7, 2019

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

Description of specimen

Several large patches, overwhelming the house.

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

In a "For Sale" lot, looks like an abandoned house. Huge patches of knotweed (I think Japanese knotweed from a distance). Just want to make sure that you know of it. Located off of east side of Cornelius Pass Road, heading north of Hwy 26, between NE Wagon Drive and NW Rock Creek Blvd, just south of Christian Center grassy field. You can't miss these big plants!

Expert Reviewer

Tyler Pedersen
Tualatin Soil and Water Conservation District

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