
Emerald ash borer now detected in more than 20 Front Range cities
First detected in Boulder in 2013, this invasive, tree-killing beetle threatens thousands of Colorado’s ash trees.
Alert: Mountain Pine Beetle Outbreak
We’re monitoring a mountain pine beetle outbreak on the Front Range of Colorado. Access key resources for managing mountain pine beetles in your trees and stay informed about the outbreak.
Serving Larimer and Weld counties in north-central Colorado, improving forest health through technical assistance.
The predominant forest types in the Fort Collins Field Office area are ponderosa pine, lodgepole pine and spruce fir. The area is home to the Cache la Poudre and Big Thompson rivers, Longs Peak and Rocky Mountain National Park. Elevation ranges from 4,734 to 14,259 feet.
Recent major fires in the area include: Cameron Peak (2020 – 208,663 acres, largest in Colorado history), High Park (2012 – 87,284 acres) and Alexander Mountain (2024 – 9,668 acres).
Max Erickson – Supervisory Forester
Luke Dittrich – Lead Forester
Adam Mitchell – Forester
Pete Morin – Forester
Greg Zausen – Forester
Physical Address
3843 Laporte Ave.
Fort Collins, CO 80521
Mailing Address
Colorado State Forest Service
5060 Campus Delivery
Fort Collins, CO 80523-5060
(970) 491-8660
FAX (970) 491-7736
[email protected]

Rocky Mountain National Park
Arapaho & Roosevelt National Forests
Natural Resources Conservation Service Colorado Area 2
Boyd Lake State Park
Lory State Park
Larimer County Extension
Weld County Extension
Larimer County Department of Natural Resources
West Greeley Conservation District
Fort Collins City Forester
Greeley Forestry
Loveland City Forester

First detected in Boulder in 2013, this invasive, tree-killing beetle threatens thousands of Colorado’s ash trees.

New CSFS video shows the devastating damage sustained in Yuma, Colo., from a 45-minute storm of baseball-sized hail. Yuma resident Edna Clawson shares the deep connection she has to the trees in her yard and her concern for their future.

Christina Burri’s proactive steps enabled firefighters to save her home from wildfire.