Knotweed (species unknown) (Fallopia spp.) on Aug 14, 2024
Submitter does not have a specimen EDRR Status: Local expert notified
Description of specimen
Japanese Knotweed, about 80' X 80'
Commentary
Thanks for this report, and sorry that I didn't check this website very often over the fall. This does look like knotweed, and we really want to help people control this weed. I'll look deeper into it, and see who the property owner is. I bet we could get this treated with some of our other invasive species work. Knotweed is always a great weed to report on this website. Thanks, Michael
Michael Ahr
Feb. 13, 2025, 2:05 a.m.
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
Both sides of a pump chance, Benton County, Kiger Island, Willamette Middle Channel, South of Corvallis.
44.509935, -123.255660
Expert Reviewer
Michael Ahr Benton Soil and Water Conservation District
Michael Ahr
Feb. 13, 2025, 2:05 a.m.