Land Plants - invasive

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

Originally reported as Giant Knotweed (Fallopia sachalinense)

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

Description of specimen

A number of stands of knotweed scattered throughout large vacant lot. Clumps range from 6' diameter to much larger.

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 lot west of Ivy St. behind Swiegert Accounting and real estate office.

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

© 2024 Portland State University | Contact us for questions regarding site content