The spruce beetle has caused extensive tree damage to all species of spruce throughout the West.
Spruce Beetle in Colorado
Spruce beetle infestations usually are found in large diameter trees that have been felled by wind or stressed by natural factors such as flooding, drought or old age.
Symptoms of Infestation
Needles on infested trees tend to drop to the ground after high winds. This can happen the second summer after the tree has been infested. Trees that have been killed by the spruce bark beetle are very dry and may create a severe fire hazard. In addition, wood products can be lost and watershed function impaired.
Large outbreaks of the spruce beetle are difficult to control. Small infestations can be eliminated by quick action such as removal of infested trees. Contact a professional forester about the silvicultural, physical and chemical management practices available.
Learn More About Spruce Beetle
- Bark Beetles: Are Your Trees At Risk? (2.4 MB PDF)
- Spruce Beetle Poster (270 KB PDF)
- Spruce Beetle - 2014 Quick Guide (486 KB PDF)
2013 Forest Health Report
- 2013 Report on the Health of Colorado's Forests (2.1 MB PDF)
2013 Insect & Disease Maps
- 2013 Insect & Disease Activity in Colorado Forests Map (154 KB PDF)
- 1996-2013 Forest Insect & Disease Progression in Colorado Map (180 KD PDF)
2013 Insect & Disease Update - A Supplement to the 2013 Forest Health Report
- 2013 Colorado Forest Insect and Disease Update (1.4 MB PDF)