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Emerald Ash Borer 

In June 2020, Emerald Ash Borer was identified in the Homestead Park neighborhood in Arvada.


  • What is Emerald Ash Borer? Emerald Ash Borer (EAB) is an invasive insect that has killed more than 50 million Ash trees in 30 states since the initial discovery in Michigan in 2002. This insect is considered to be one of the most destructive, invasive species the United States has faced.

  • What does the Emerald Ash Borer Look like?
    The insect is metallic and green. It is 1/2'"long and 1/8" wide. Learn more.

  • What is the City doing about EAB? The City has been preparing for the eventual infestation of EAB well ahead of its official arrival. During the last several years, forestry staff have completed an inventory of the size, location and health of all 1,200 ash trees on City of Arvada public property (697 have been treated for control of Emerald Ash Borer). The City has created an EAB Management Plan, which is currently being updated. Check back for the updated version. 

  • How can the City help me protect my ash trees? We can provide our residents with resources for guidance in the identification of EAB, protective measures against EAB, and potential removal of infested ash trees. For additional information, visit

  • What trees are at risk? All species of ash trees. 

General Information

For more information on EAB please visit‚Äč


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