Forest Insects and Diseases

Forest insects and diseases are natural parts of our forest environment. But when there is an outbreak or an introduced problem, losses can be extensive and expensive. Learn more about forest insects and the part they play in the ecology of wildland and urban forests.



For assistance in the diagnosis and control of forest insect and disease problems go to the U-Idaho Extension Forestry Tree Clinic.

Articles 

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• Asian Gypsy Moth
• Bark Beetles, Slash, and Forest Fertility
• Douglas-fir Tussock Moth 
• Dutch Elm Disease: An Old Problem in a New Place 
• Gypsy Moth Monitoring in Idaho
• Invasive Species
• Mistletoes and Dwarf Mistletoes
• Mountain Pine Beetle 
• Pine Engraver Beetle
• Sudden Oak Death (SAD) 
• The Case of the Deformed Trees (Eriophyid Mites) 
• The Pine Engraver
• Thousand Cankers Disease on Black Walnut
• White Pine Blister Rust: Pruning Can Increase Survival
  

Other Resources

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• Biological Control: A Guide to Natural Enemies in North America
• Idaho Department of Lands - Forest Health Program
• Idaho Department of Lands State Forester Forums
• Idaho Forest Products Commission
• The PNW Plant Disease Management Handbook 
• The PNW Insect Management Handbook
• USDA Forest Service PNW Region - Forest Insects and Diseases
• USDA Forest Service PNW Region - Forest Health Protection