4-County Cooperative Weed Management
Cooperative Weed Management in OR and WA
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Welcome
About Us
Events Calendar
Invasive Plant Information
Common Weed Fact Sheets
Best Management Practices
American Pokeweed
Canada Thistle
Cutleaf/Himalayan Blackberry
False Brome
Garlic Mustard
Giant Hogweed
Hawkweeds
Indigobush
English, Irish, and Persian Ivy
Knotweeds
Lesser Celandine
Meadow Knapweed
Old Man’s Beard
Puncturevine
Reed Canarygrass
Rush Skeletonweed
Scotch Broom
Spurge Laurel
Tansy Ragwort
Tree of Heaven
Water Primrose
Yellow Archangel
Weed Identification and Control Websites
CDFA Encycloweedia
USDA/NRCS Introduced, Invasive, and Noxious Plants
King County Noxious Weed Identification and Control
Oregon Invasive Species Council
ODA Noxious Weed Profiles
OPB The Silent Invasion
OSU Herbarium- Oregon State University
Washington State Noxious Weed Control Board
Printable Guides to Weed Identification & Control
CWMA Resources
Agency Documents
Past Events
Pull Together
2015 Pull Together
2014 Pull Together
2013 Pull Together
2012 Pull Together
Garlic Mustard Working Group
2015 Garlic Mustard Working Group
2014 Garlic Mustard Working Group
Herbicide Forum
2015 Herbicide Forum
2014 Herbicide Forum
2014 Herbicide Roundtable
2013 Herbicide Roundtable
Partners
How to Help
Water Primrose
This page is under construction. Please check back.
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Contact Us: Sarah Hamilton
4-County CWMA Coordinator
info@4countycwma.org
503.210.6015
