2026 Mt. Hood National Forest Integrated Weed Management Program

Mt. Hood National Forest will implement the Integrated Weed Management Program, which involves using herbicides, mechanical tools, hand pulling, and biological control. Beginning in April, qualified professionals will visit snow-free areas in each Ranger District (Clackamas River, Zigzag, Hood River, Barlow) to carry out invasive plant treatment activities. Control efforts will continue throughout summer and autumn as conditions permit. Applicators will follow all restrictions and regulations regarding the use of herbicides as stated on the herbicide label and the Final Environmental Impact Statement for Mt. Hood National Forest and Columbia River Gorge National Scenic Area (FEIS 2008). Invasive plants scheduled for treatment include: non-native grasses, non-native knotweeds, non-native hawkweeds, knapweeds, herb Robert, shining geranium, houndstongue, toadflax, false brome, sulphur cinquefoil, Himalayan blackberry, Scotch broom, and English ivy. Oregon State licensed personnel will apply herbicides on target species using ground-based equipment or backpack sprayers. A local Forest official or trained staff will monitor treated sites and conduct appropriate restoration. Information on invasive plant management on Mt. Hood National Forest is available on the website: http://www.fs.usda.gov/mthood/. General information on noxious weed identification and management is available from: http://oregon.gov/ODA/PLANT/WEEDS/ Noxious weed sites identified for treatment are primarily along roadsides and will be posted prior, during, and after application. Additional information may be obtained by contacting Lin Kyan (971)-333-4131 for Clackamas River and ZigZag Ranger Districts, or Christina Mead (541)-467-5132 for Barlow and Hood River Ranger Districts.