Emerald Ash Borer in Colorado

Emerald ash borer (EAB) was first detected in Colorado in Boulder and continues to expand. Thanks to the Colorado Tree Coalition (CTC) and the EAB Response Team, Colorado communities are informed about the potential impacts and management actions needed to prepare for likely future infestations in urban ash tree populations.

Through the Landscape Scale Restoration (LSR) Grant Project, the Colorado State Forest Service (CSFS) is working to build on this foundation and increase resources for small and mid-sized communities along the Front Range.

Your Ash is on the Line is a project that includes:

  • Inventories of public ash trees in small communities (less than 20,000 people) along the Front Range
  • Expansion of the EAB Response Team (a group of municipalities and industry professionals) to share ideas and solutions
  • Wood utilization workshops
  • Online EAB toolkit
  • Front Range EAB Management Plan

View the full project summary and map of the project area (300 KB PDF).

Ash tree identification

Learn to Identify Ash Trees

Be aware of the symptoms of emerald ash borer

Be Aware of the Symptoms

What you can do to help stop EAB

Explore Your Options

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Upcoming Events

Wood Utilization Workshop
June 24, 2020, 9 a.m. – 3 p.m.
Fort Collins, Colo.
Interested in attending? Email us at yourashisontheline@gmail.com

Get Involved

If you want to learn more or are interested in participating in the EAB Response Team email us at


Resources (PDFs)

Is Your Area at Risk?

Explore the areas of Colorado impacted by the emerald ash borer.
The shaded area on the map indicates the project area for Your Ash is on the Line.