Alerts & Notices


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  • Herbicide applications to occur on Olympic National Forest

    The Olympic National Forest may be applying the herbicides glyphosate, clopyralid, triclopyr, aminopyralid, sulfometuron methyl, or imazapyr to noxious weeds or other invasive plant species from April 25 – November 18, 2022. Limited injection or cut stump treatments may be conducted from November 19, 2022 – April 22, 2023. Please see the following spreadsheet and maps for a more detail about treatment areas.

    Applications will be conducted as planned in the Final EIS-Olympic National Forest Site Specific Invasive Plant Treatment Project, which was finalized in 2008. Notices indicating that the formulation of the herbicide to be applied will be posted at entrances to the target road systems and/or individual sites. For questions about applications contact Nick Jarvis, Invasive Plant Program Coordinator at (360) 956-2319.


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