Submitter does not have a specimen
1-3 plants along the fence along with Blackberry
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.
Between Warren St S road and backyard fence of corner resident on Camellia Dr S
Jacob Rose Institute for Natural Resources
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