Emerald Ash Borer Treatment and Prevention

The emerald ash borer (EAB) is one of the most destructive invasive insects affecting ash trees. Without treatment, this pest can weaken and eventually kill healthy ash trees.

At Urban Forestry LLC in Lees Summit, MO, we provide professional Emerald Ash Borer detection, prevention, and systemic treatment to protect your ash trees and preserve your landscape investment.

Call (816) 255-1222 to schedule an inspection in Lees Summit, MO.

Emerald ash borer beetle on a green leaf; metallic green and black body.

What Is Emerald Ash Borer?

The emerald ash borer is a metallic green beetle that targets ash trees. While the adult beetle is visible for only a short time, the real damage occurs beneath the bark.

Larvae tunnel through the inner bark and cambium layer, disrupting the tree’s ability to transport water and nutrients. Over time, this internal damage causes the following:

  • Canopy thinning
  • Dieback in upper branches
  • Sprouting at the base of the tree
  • Bark splitting
  • Eventual tree death

In Lees Summit, MO, untreated ash trees typically decline rapidly once infestation begins.

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How to Identify Emerald Ash Borer Damage

Signs of infestation may include:

Tree trunk with multiple holes and areas of missing bark.

D-Shaped Exit Holes

Small, D-shaped holes in the bark where adult beetles emerge.

Intricate, meandering patterns carved into the exposed wood of a tree trunk.

Tunneling Beneath the Bark

Serpentine galleries left behind by larvae feeding inside the tree.

Bare tree in a field on a sunny day. Other trees and small buildings in the distance. Blue sky.

Canopy Thinning

Leaves becoming sparse in the upper crown.

Close-up of a tree stump, light brown with growth rings visible, surrounded by rough bark.

Bark Splitting

Cracks in the bark that reveal larval galleries underneath.

Tall tree with multiple light brown trunks and green foliage, set in a grassy yard.

Epicormic Sprouting

New shoots growing from the trunk or base due to stress.

If you notice these signs in Lees Summit, MO, immediate action is critical.

Why Fall Is the Best Time to Treat

The most effective time to treat ash trees for Emerald Ash Borer is in the fall while leaves are still present.

During this period:

  • The tree actively transports nutrients.
  • Insecticide injections are absorbed efficiently.
  • Protection is established before spring activity begins.

If treatment is delayed until spring, the insecticide may not be fully distributed when larvae resume feeding.

In Lees Summit, MO, fall treatment ensures your ash tree is protected during the most critical months.

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Professional Treatment with Emamectin Benzoate

Emerald ash borer treatment is based on a systemic trunk injection using emamectin benzoate.

This treatment works by:

  • Creating small injection ports around the base of the tree
  • Delivering the solution directly into the vascular system
  • Distributing protection throughout the canopy
  • Targeting larvae feeding beneath the bark

Because the product moves internally, it protects the entire tree from the inside out.

At Urban Forestry LLC in Lees Summit, MO, our arborists carefully calculate dosage and injection spacing to ensure the following:

  • Minimal tree stress
  • Proper absorption
  • Maximum effectiveness
  • Long-term protection

Precision matters.

Combining Pruning and Injection for Better Results

Late-season pruning combined with trunk injection can improve overall tree health by:

Removing dead or declining limbs

  • Reducing stress on the canopy
  • Limiting areas where decay can develop
  • Improving structural integrity

This integrated approach in Lees Summit, MO, helps reduce both infestation pressure and secondary decline factors.

Arborist using chainsaw to cut a tree branch, wearing safety gear and climbing harness. Outdoors.
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What Happens If You Do Not Treat?

Untreated ash trees typically:

  • Lose canopy density year by year
  • Become structurally unstable
  • Develop internal decay
  • Require full removal

Tree removal and stump grinding can be significantly more expensive than preventative treatment.

Early detection and proactive injections in Lees Summit, MO, can preserve mature ash trees for many years.

Frequently Asked Questions

  • Can Emerald Ash Borer Be Stopped?

    Yes, if treated early with professional systemic injections.

  • How Long Does Treatment Last?

    Emamectin benzoate treatments can provide protection for multiple growing seasons, depending on tree size and condition.

  • Should I Remove My Ash Tree Instead?

    If caught early, treatment is often a cost-effective alternative to removal in Lees Summit, MO.

  • Is the Injection Harmful to the Tree?

    When administered properly by certified arborists, the treatment is safe and minimally invasive.

    Emerald Ash Borer is aggressive, but your ash tree does not have to be a loss.

At Urban Forestry LLC in Lees Summit, MO, we provide professional detection, strategic treatment, and long-term protection plans to defend your trees from infestation.

Call (816) 255-1222 today to schedule your Emerald Ash Borer evaluation in Lees Summit, MO.