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Forest Health

Forest Health Protection work ensures the long-term health and sustainability of forests and trees through support to the states and the region’s national forests and other federal lands. With partners, scientists on the Rogue River-Siskiyou National Forest provide forest health monitoring information, promote integrated pest management, and provide technical assistance to prevent, suppress, and control pest outbreaks. 

Report: Douglas-fir Decline in Southwest Oregon (2025)

Douglas fir Decline in Southwest Oregon report cover

The recent increase in Douglas-fir (Pseudotsuga menziesii) decline and mortality in southwest Oregon, known as the Douglas-fir Decline Complex, results from harsh site conditions and persistence of hot droughts and secondary insects and diseases.

Last updated February 3, 2026