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Emerald ash borer detected in city

Emerald ash borer is the most destructive and costly invasive tree pest in North American history and is responsible for destroying hundreds of millions of ash trees. EAB is rapidly spreading throughout the City of Westminster, all ash trees must receive preventative treatments every 2-3 years or they will be killed by the insect. In September 2019, Emerald Ash Borer (EAB) was confirmed in Westminster, in the vicinity of 128th Avenue and Zuni Street. This follows EAB being confirmed a few weeks earlier in adjacent Broomfield.

Learn more about the EAB

Now is the time to act to save your valuable ash tree! 

Do I have an ash tree?

Emerald Ash Borer damage

You probably do, 1 out of every 7 trees in the City is an ash.

Green ash, white ash and Autumn Purple ash are very desirable for landscape planting because they grow well under difficult conditions and have been widely planted. There are an estimated 69,000 ash trees in the city. Use this identification key to determine if you have an ash. The EAB/ash tree ID app can be downloaded by searching in app stores for “ash trees.”

This smart phone app is available to help determine if a tree is an ash tree: Ash Tree App

What can I do to save my ash?

1.           Call a tree care company to evaluate your trees and apply preventative EAB treatments.

2.           Act now! Get your ash tree on a recommended treatment cycle ASAP before it’s too late.

Can my ash tree be saved?

Consult a tree care company to determine if the tree is worth saving. Healthy ash trees in a good location with a trunk diameter greater than eight inches can and should be saved!