Land Plants - invasive

Knotweed (unknown species) (Fallopia sp.) on Jun 5, 2009

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

Description of specimen

Large vacant lot on east side of NW Expressway with several clumps of knotweed ranging in size from 5-6' diameter to >10' diameter.

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

Vacant lot at end of Allea Dr. north of Maxwell and east of NW Expressway.

Expert Reviewer

Tania Siemens
WISE Program Coordinator (Watershed and Invasive Species Education)
Oregon Sea Grant Extension
Oregon State University
tania.siemens@oregonstate.edu
541-914-0701

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