303-378-8000‬ info@dlcarbor.com

Emerald Ash Borer

Protect your high-value ash trees immediately!

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Emerald Ash Borer Treatment 

The Emerald Ash Borer (EAB) is an invasive green jewel beetle native to eastern Asia that feeds and breeds on Green and White Ash trees. American Ash trees have no natural defense against the EAB. The insect killed tens of millions of trees across 22 states east of the Mississippi River.

The EAB arrived in Colorado in 2013 when the invasive green jewel beetle appeared in Boulder near the University of Colorado campus. It moved out of Boulder in 2019, giving surrounding cities six years to set up EAB management programs. In 2016, The City of Denver implemented its Be A Smart Ash program to educate its citizens about EAB. City Foresters do expect property owners to manage the Ash on their property. In a nutshell, homeowners need to remove any marginal Ash trees on their property and get their high-value trees treated now. Any Ash tree in poor health needs removal

Are Ash Trees Worth Saving?

An attractive, mature tree landscape is worth about five to ten percent of a homes real estate value. Since the average home price in Denver is $545,000, this equates to between $27,000 to $54,000 in value. It may take up to three years for EAB detection. So, when a property owner notices the bug, it is too late to save their Ash. Prevention is the best tactic. 

Emerald Ash Borer Treatment

DLC Arbor Service uses systemic products to protect Ash trees against the EAB and other pests like Lilac Borer, Ash Twig Beetle, and Aphids. Additionally, pruning, fertilizing, and watering improve vigor and make the trees more resistant to the insect. DLC Arbor is licensed to apply EAB treatments in the Denver area. For EAB treatment, please click the service request button or give us a call at 303-378-8000.

Years Established

Completed Projects

Do I Have an Ash Tree?

One in six trees in Denver are ash, and they are easy to identify.

Opposing Branching

Ash tree branches grow exactly opposite of each other rather than staggering or alternating.

Compound Leaves

All of the parts of a compound leaf originate from a single stem. Ash tree leaves possess 5-9 leaflets per stem.

Diamond-patterned Grey Bark

The bark on mature Ash trees is usually gray with a distinct pattern of diamond-shaped ridges.

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DLC Arbor Services

123 Vallejo St.

Denver, CO 80223