Land Plants - invasive

Japanese Knotweed (Fallopia japonica) on Sep 28, 2016

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

Description of specimen

Knotweed. Large specimen. Just past flowering.

Commentary

Hi, Elizabeth. Thanks for the report. We'll definitely put that point on map. We're mostly done adding patches for treatment, though: too much in Portland for one guy to manage!

-Mitch

Mitch Bixby
Oct. 4, 2016, 2:41 a.m.

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

On the river side of the spring water trail. Down the side of the bank south of the Ross Island lagoon

Expert Reviewer

Mr. Mitch Bixby
City of Portland - Bureau of Environmental Services (BES)

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