Visit our Colorado State Extension office for more news, tools and resources.

Close Icon
   
Colorado State University Extension offices like the one in Jefferson County bring the research and resources of the university within easy reach, and our staff are here to help.

Emerald Ash Borer Found in Broomfield, Westminster, Larimer County, and Arvada CO

October 2, 2013 (Updated August 20, 2019, September 11, 2019, October 2, 2019, June 2020)Emerald ash borer

While EAB was first confirmed in Boulder in September of 2013, its presence has been confirmed in the City and County of Broomfield, in the City of Westminster (Adams County) in Larimer County near Berthoud, and most recently in the City of Arvada.  This insect has devastated ash trees in many midwestern and eastern states. The Colorado Department of Agriculture has posted information at this location. This pest infests only ash trees. Mountain ash are not ash trees; they belong to a different family of plants and do not develop infestations. Additional information will be posted as it becomes available.

2 Responses on “Emerald Ash Borer Found in Broomfield, Westminster, Larimer County, and Arvada CO

  1. Patty Keck says:

    Has the Ash Borer come to the Denver Metro area? If we have a Mountain Ash tree, do we need to have it treated for the Ash Borer?

    1. lvernon says:

      Patty, the Emerald Ash Borer has not been found in the Denver Metro Area. EAB only attacks ash trees in the genus Fraxinus (so mountain ash are not susceptible).

Leave a Reply

Your email address will not be published. Required fields are marked *

Keeping ahead of COVID-19

This rapidly evolving coronavirus (COVID-19) has imposed an unsettling, fluid situation upon our community and its businesses. While the team here still aims to maintain a “business as usual” approach, we are making a number of significant changes to our operations to account for a situation that is far from normal.