Land Plants - invasive

Japanese Knotweed (Fallopia japonica) on Jul 10, 2020

Submitter does not have a specimen
EDRR Status: Population assessed

Description of specimen

Large heart shaped leaves on bamboo like main stems.

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

Canby park. Just upstream from the boat ramp on the Molalla river. This is about a month ago.

It's been a few years (4 or 5) since saw the plant in the Molalla river state park. Walk West from the parking lot to get to the Molalla river. In the trees and around the trail close to the river.

Expert Reviewer

Samuel Leininger
Clackamas Soil and Water Conservation District
4-County Cooperative Weed Management Area
Columbia Gorge Cooperative Weed Management Area

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