Granby Field Office – Insects & Diseases
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.
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.
Pine
Spruce
Fir
- Douglas-fir Beetle – 2016 Quick Guide
- Douglas-fir Tussock Moth – 2015 Quick Guide
- Western Balsam Bark Beetle
Aspen
- Aspen and Popular Leaf Spots (2.6 MB PDF)
- Cytospora Canker (1.4 MB PDF)
- Poplar Borer (115 KB PDF)
- Oystershell Scale (2.5 MB PDF)
- Aspen Scale (305 KB PDF)
- Sudden Aspen Decline (2.3 MB PDF)
Piñon Pine
- Common Piñon Pine Pests Fact Sheet (3.1 MB PDF)
Juniper
- Juniper Borer (255 KB PDF)
- Western Cedar Bark Beetle Beetle (61.3 KB PDF)