Larimer County Forestry is dedicated to serving the citizens of Larimer County and assisting with questions and concerns of vegetation, primarily woody plant material or related issues on their properties and on county lands, including rights of way. Larimer County has a diverse landscape and the issues of the property owners of Larimer County are as diverse. It is our intent to respond to all questions in a timely manner, which may be a site visit, a telephone call, an email or directing one to the person or agency which will provide the best information to the question asked. These services provided are for both urban and traditional forests.

Larimer County has experienced a number of natural but destructive events over the past 10 years which will affect private property in both the flatlands and mountainous areas of the county for years to come. Continuing and new issues are on the horizon but with continued efforts by you, the private citizens, and Larimer County we can preserve our wonderful landscape.


  • Promote forest health education and awareness by way of community presentations and site visits.
  • Forest and landscape information upon request to county residents.
  • Assist other County Departments with matters concerning vegetation on County lands including county rights-of-way.
  • Landscape installation inspections for the Larimer County Planning Department.
  • Enforcement of the state statutes (C.R.S. 35-4-101 thru 116) the "Pest Control Act", dealing with mountain pine beetle, spruce ips, Douglas fir beetle, thousand cankers disease and Dutch elm disease. See County Pest Inspector

Current pest issues in Larimer County

Mountain Pine Beetle

There is good news and there is bad news. Larimer County has seen a major decline of newly infested trees by mountain pine beetle (MPB). This does not mean that the MPB issue has gone away, just that numbers are down. The Red Feather Lakes area is still an area of concern.

Thousand canker disease

Thousand canker disease (TCD) affects black walnut trees and is a result of attacks of the walnut twig beetle and associated fungus. TCD will kill most black walnut trees in Larimer County. Sanitation is the key to limiting the spread of the TCD. As the steward of your property, removal of affected trees and the destruction of the complete tree or approved treatment of the usable wood within the affected area, is required. 

Emerald ash borer

Emerald ash borer (EAB), though not identified in Larimer County at this time, has been has been found in Boulder County. A quarantine is in place preventing all untreated ash wood and plants from leaving Boulder county. It is believed that it is only a matter of time before EAB is found in Larimer County and will have a major impact on all ash trees. 

Fire and related issues

Private landowners in the forested areas of Larimer County can limit the potential impacts of wildfire on their property and community. Learn to be "Firewise" or visit

More Info

For information on tree problems within Fort Collins city limits, call the City of Ft. Collins Forester at (970) 221-6660.

For information on wood or tree cutting permits, call the U.S. Forest Service at (970) 295-6700.


Larimer County Forester

Dave Lentz - dlentz(AT)

2649 E. Mulberry St, Suite 6, Fort Collins, CO 80524

Mailing Address
PO Box 1190, Fort Collins, CO 80522

Phone: (970) 498-5765

Office Hours: 7 A.M. - 3:30 P.M., Monday - Friday (except holidays)