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WeedWise Program A conservation program of the Clackamas County SWCD

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Chondrilla juncea_0022088_Gary L Piper

Photo credit: Gary L. Piper, Washington State University, Bugwood.org

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Think twice before killing those thistles: Thistle Identification March 21, 2017
Staff Spotlight: Sarah Hamilton, WeedWise Specialist & CWMA Coordinator April 6, 2017
Himalayan Blackberry BMP Now Available January 8, 2015
Tansy Ragwort Poisons Livestock and Neighborly Relationships! July 27, 2016
Blessed Milkthistle invading pasture lands. June 3, 2016

December’s Weed of the Month: English Holly December 1, 2024
WeedWise Technician Spotlight: Hayden Jorde November 19, 2024
Request for Proposals: Priority Invasive Weed and Vegetation Management November 5, 2024
November’s Weed of the Month: Spurge Laurel November 4, 2024
October’s Weed of the Month: Himalayan Blackberry October 1, 2024

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20 Questions Alliaria petiolata Best Management Practices BMP Christmas cinnabar moth Class A Class B Columbia Gorge CWMA CRISP Cytisus scoparius English holly English ivy Fallopia japonica Fallopia sachalinensis Fallopia ×bohemica forest understory Garlic mustard Hedera canariensis Hedera helix Hedera hibernica Ilex aquifolium invasive IPM Irish ivy noxious Orange hawkweed Polygonum cuspidatum Polygonum sachalinensis Polygonum x bohemicum priority Puncturevine Ragwort resources Scotch broom slider Specialist staff Staff Spotlight Tansy thistle Weed-of-the-Month weed profile Weeds weedwise

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WeedWise Program