Land Plants - invasive

Knotweed (species unknown) (Fallopia spp.) on Jul 24, 2009

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

Description of specimen

Infestation of numerious ploants covering area of about 40 square feet.

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

In small fallow field on west side of River Road several hundred feet south of the Lone Pine Rd - River Road intersection.

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

© 2025 Portland State University | Contact us for questions regarding site content