Emerald Ash Borer (EAB) 

If a Denver property owner deems their Ash trees valuable, then it’s time to start EAB tree treatment. Ross Tree Company prides itself on being one of the first companies to offer tree injections, a viable alternative to spraying trees. We have three Qualified Supervisors (QS) certified by the Colorado Department of Agriculture to use tree insect control products. Ross Tree is committed to only using what is necessary to treat the trees of our customers and nothing more.

For young Ash trees, we recommend a systemic bark spray. The Ross Tree plant care specialist sprays the trunk up to five feet above the ground. Then, the tree absorbs the product which protects young Ash trees from Ash Borers. For large Ash trees, we recommend trunk injections, which injects the EAB control products directly into the trunk. The tree’s vascular system then absorbs the product and distributes it throughout the tree. Finally, EAB larvae die when they chew on the tree’s nutrient-conducting tissues. Trunk injections are cost effective because they last two years and are environmentally friendly. Want to learn about your EAB treatment options? Click here to fill out a request service form or call 303-871-9121. We are at your service.

Quick Facts from Colorado State University Extension Service

What does the EAB do?

  • Kills ash trees!

  • Larvae feed under the bark, eventually girdling the tree and cutting off nutrients.

  • Trees are killed within 2-4 years of first symptoms, even previously health trees.

  • Trees of all size can be attacked, from 1/2-inch saplings to the largest mature trees.

  • This insect is very difficult to detect because it is under the bark and the adults are only around from May to September.

Your Ash Trees

Residential and commercial property owners with Ash trees need to ask themselves how much they value them. Tree value comes from the following:

  • A mature tree landscape adds between 5 to 10 percent to a property’s value. Denver’s real estate market has shot up substantially since the 1990s, so the value of mature trees in a yard can equal the cost of a new automobile.

  • Mature Ash trees provide shade and ambiance. Most homeowners will miss their trees when the hot, western sun bears down on their home and will also miss the colorful fall foliage.

  • Ash Borer treatment is less expensive than removal. To remove a large tree, Ross Tree may need to use a crane, which dramatically increases removal costs.

  • There are about 1.5 million Ash trees in the Denver area. Once the EAB makes it presence known in Denver, it might be close to impossible to book an appointment with a tree service company. It is best to take the initiative and treat your Ash trees now.

Our Trees look terrific!!! Your men were so nice and such hard workers. They did a great job and cleaned up nicely. It was a pleasure to have them here.
 
Mary & Dennis

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