Emerald Ash Borer Detected in Broomfield

Photo courtesy of Colorado State Forest Service

The Emerald Ash Borer (EAB) was confirmed in the City and County of Broomfield, northwest of Denver, on Aug. 20, 2019 – the first confirmation of EAB in Colorado outside of the federal quarantine that primarily encompasses Boulder County.

A Broomfield resident familiar with the appearance of EAB due to Broomfield’s proactive public education campaign noticed a suspicious insect on their personal property near 136th Avenue and Main Street and contacted the Broomfield city forester. It is not known whether the pest arrived by natural spread or human transport such as firewood.

At least 15% of all urban and community trees in Colorado are ash species susceptible to being killed by EAB. EAB attacks and kills both stressed and healthy ash trees and is so aggressive that trees typically die within two to four years after infestation. While EAB has not yet been detected in Denver, it could already be here.

Wondering what you can do to protect your ash? We have resources to help you review options.