Mountain Pine Beetle Information & Resources To Know
Mountain Pine Beetle Information and Resources
- Learn more about Mountain Pine Beetle including what it is, what the signs & symptoms are, what the annual activity has been year over year, and management options
- 2024 Forest Health Report
- Each year the state of Colorado uses aircraft to inventory the health of our forests. Explore the interactive survey results map to learn more -
- Publication: Mountain Pine Beetle

The aerial crew will fly in this small plane to conduct forest health surveys.
Photo: Dan West, CSFS
Stands of lodgepole infest with mountain pine beetles appear reddish-brown when viewed from the air.
Photo Dan West, CSFS

Mountain pine beetle is making a comeback in Colorado, although tree mortality from this insect is not even close to the levels experienced during the epidemic that subsided a decade ago.
Graph: Dan West, CSFS
Western spruce budworm, which defoliates and weakens trees but does not always kill them, is the most widespread forest pest in Colorado. The budworm affected far more acres statewide in 2024 than the most prolific bark beetles combined.
Graph: Dan West, CSFS
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