Japanese Knotweed (Fallopia japonica) on Apr 19, 2016
Submitter has sample EDRR Status: Local expert notified
Description of specimen
Hollow stalks with flat green leaves, flowers in summer
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
I've been trying to control Japanese knotweed in my backyard but it's sprouting and spreading too fast. I would like some advice please. 2340 19th St, Florence
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