Forest Health

Forest health highlights in Washington is published annually by the USDA Forest Service, Pacific Northwest Region and the Washington Department of Natural Resources.  This 40 page publication gives details on the specific insects and areas of damage, mostly in eastern Washington.

The Washington Department of Natural Resources has on online map that shows the results of the annual aerial insect and disease survey from 2011-2016.  Various layers can be viewed together or separately.  Foliar diseases, defoliating insects, abiotic, animal, and root diseases are identified, as well as large fires in the state.

USDA Forest Service, Pacific Northwest Region, Forest Health has a number of publications about forest health, including

  • Forest Disease Management Notes, which describe various diseases that can affect native trees
  • Forest Health Highlights by state and year
  • Links to many more publications about diseases and insects in the Pacific Northwest