Insects and diseases can pose serious threats to a forest’s health. Our foresters monitor insect and disease activity and trends, and respond to emerging threats to our communities’ forests.
Granby Field Office – Insects & Diseases
Common Insect & Disease Concerns
If your questions cannot be resolved with the information provided, please contact the Granby Field Office.
Foresters are available for site visits to look at specific insect or disease concerns on your property.
- Aspen and Popular Leaf Spots (203 KB PDF)
- Cytospora Canker (87 KB PDF)
- Poplar Borer (115 KB PDF)
- Oystershell Scale (78 KB PDF)
- Aspen Scale (305 KB PDF)
- Sudden Aspen Decline (2.3 MB PDF)
- Common Piñon Pine Pests Fact Sheet (297 KB PDF)
2018 Insect & Disease Activity in Colorado Forests
Pass your cursor over the map below to zoom in on an area
Forest Insect & Disease Aerial Survey
CSFS Forest Entomologist Dr. Dan West has produced an Esri Story Map for the 2018 Forest Health Report, which tells the story of how data was collected to compile the report, and offers users an interactive way to find out about forest conditions in their area.
Use your cursor to zoom in/out and navigate around the map to display Eagle, Grand and Summit county information.