Submitter does not have a specimen EDRR Status: Local expert notified
One clump, now flowering.
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.
On the Trask River just upstream from 2390 Nielsen Road. On the side of the river opposite the road.
Mr. Vern Holm Director, Oregon Vegetation Management Association
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