Columbia Gorge
Cooperative Weed Management Area
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Who Are We?
Why Manage Weeds?
Steering Committee
Events
CWMA Calendar
Invasive Species and Exotic Pest Workshop
2025 Columbia Gorge Invasive Species & Exotic Pest Workshop
2024 Columbia Gorge Invasive Species & Exotic Pest Workshop
2023 Columbia Gorge Invasive Species & Exotic Pest Workshop
2022 Columbia Gorge Invasive Species & Exotic Pest Workshop
2021 Columbia Gorge Invasive Species & Exotic Pest Workshop
2020 Columbia Gorge Invasive Species and Exotic Pest Workshop
2019 Columbia Gorge Invasive Species and Exotic Pest Workshop
2015 Columbia Gorge Invasive Species and Exotic Pest Workshop
Field Day
Field Day 2024
Field Day 2023
2019 Field Day in the Eagle Creek Fire Burn Area
Stop The Invasion
2019 Stop The Invasion: Weed Management 101
2017 Stop the Invasion: Weed Management 101
2019 Boot Brush Kick-Off
Projects
Clean Your Boots to Protect the Columbia Gorge
Weeds
Best Management Practices
Canada Thistle
Cutleaf/Himalayan Blackberry
English Holly
False Brome
Garlic Mustard
Hawkweeds
Houndstongue
Indigobush
Invasive Ivy
Knotweeds
Old Man’s Beard
Meadow Knapweed
Poison Hemlock
Puncturevine
Purple Loosestrife
Reed Canarygrass
Rush Skeletonweed
Scotch Broom
Scotch Thistle
Shiny Geranium
Spotted Knapweed
Tansy Ragwort
Tree of Heaven
Ventenata
Yellow Starthistle
CWMA Weed List
Weed List Ranking
Media
CGCWMA Poster 2015
CGCWMA Trifold
Play. Clean. Go.
Puncturevine Brochure-HRSWCD
Worst Weeds of the Gorge QR Code
Puncturevine Poster-HRSWCD
Thistles of the Willamette Valley
WIN IPM Matrix
Worst Weeds of the Gorge
How To Help
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Member Packet
Archive
General Meeting Minutes
Steering Committee Minutes
Education & Outreach Committee Minutes
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CWMA Calendar
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