Knotweed Information and Control Resources
Where can I learn more about knotweed and knotweed control?
Best Management Practices for Invasive Knotweeds King County Noxious Weed Program
Great videos demonstrating removal techniques for knotweeds King County Noxious Weed Program
General information about knotweeds Washington State Noxious Weed Control Board
Register for a noxious weed control class (including how to borrow and use county stem-injectors) King County Noxious Weed Program
Oxbow Farm & Conservation Center report on chemical and manual control methods for knotweed
Who can I contact for help with knotweed?
In King County:
- Justin Brooks, King County Noxious Weed Control Program: justin.brooks@kingcounty.gov
- Dan Sorensen, King County Healthy Lands Project Coordinator: dsorensen@kingcounty.gov
- King Conservation District
In Snohomish County:
- Geraldine Saw, Noxious Weed Control Board, saw@snoco.org; 425-388-7548.
Where can I report knotweed to help King County tackle this invasive plant?
Who should I contact to inquire about borrowing herbicide injection or spray equipment to control my own knotweed stand?
In King County:
Sayward Glise (Project Manager, King County Noxious Weed Control Program) sayward.glise@kingcounty.gov; 206-877-3937 (cell)
In Snohomish County:
Geraldine Saw, Noxious Weed Control Board, saw@snoco.org; 425-388-7548.