Submitter does not have a specimen EDRR Status: Local expert notified
See pictures.
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.
This is a vacant lot with a heavy infestation that has been growing here for years.
Tanya Beard
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