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Jefferson County officials and partners outline steps as mountain pine beetle outbreak spreads

Conifer Area Council · November 20, 2025
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

County and partner officials at a Conifer town hall described an escalating mountain pine beetle outbreak affecting private property and open space, reported more than 575 known sites, and urged early detection, defensible-space thinning, and coordinated treatment timing.

County and partner officials urged Conifer residents on the front range to act now to address an expanding mountain pine beetle outbreak that they said is increasing local wildfire risk and damaging thousands of trees.

"We're in about the third or fourth year of a current outbreak," said Alicia Dorn, GEFCO invasive species management coordinator, who told the audience her team has identified "over 575 unique sites" with beetle activity in Jefferson County. Dorn outlined indicators residents should watch for—frass, pitch tubes, distinctive galleries and blue-stain fungus—and described timing- dependent controls: solarizing cut logs, plastic solarization (clear 6-mil minimum) by May 15,…

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