Emerald Ash Borers (EABs) are an invasive species of beetle that have wreaked havoc on ash trees across North America. These pests have caused catastrophic damage to thousands of trees, leaving them weak and susceptible to other diseases and infestations. If you have ash trees in your yard or on your property, it's essential to know how to protect them from EAB infestations. This post discusses everything you need to know about emerald ash borer tree treatments.

Signs of EAB Infestation:

The first step in treating EAB is to know the signs of infestation. Early detection is crucial to the success of treatment. Some of the most common signs are:

  • The bark of the tree displays exit holes in a distinctive D-shape.
  • S-shaped tunnels under the bark
  • Unusual canopy dieback
  • Splitting bark
  • Increased woodpecker activity

Biological Control:

Biological control is one of the most effective ways to treat EAB infestations without using harsh chemicals. These treatments involve introducing natural predators of EABs into the environment, such as parasitic wasps. These wasps lay their eggs inside EAB larvae, eventually killing them. This method of treatment can be effective, but it requires patience, as it can take several years to see the results.

Insecticide Treatments:

Insecticides are a popular treatment option for EAB infestations. These treatments can be applied as a soil drench, trunk injections, or sprays. Soil drenches and trunk injections are the most effective, as they provide long-lasting protection. However, both options require the services of a certified arborist or pesticide applicator. 

Tree Removal:

In some cases, it may be necessary to remove an infested tree to prevent the spread of EAB to nearby healthy trees. Removing an infested tree also eliminates a food source for the pests, which can help reduce the overall population in the area. If you suspect an infestation of EAB in one of your ash trees, it is advisable to seek the expertise of a professional arborist. 


Taking a proactive approach is crucial for safeguarding your ash trees against EAB infestations. Engaging a certified arborist for regular inspections can aid in the early detection of any signs of infestation. This not only enhances the quality of tree care but also ensures the timely implementation of preventive measures. Proper tree care practices, such as pruning and fertilization, can also help keep trees healthy and better able to resist pests and disease.

The Emerald Ash Borer poses a significant danger to ash trees, making it imperative to take proactive measures to safeguard their well-being. Remember to be vigilant for signs of infestation, consider using biological or chemical treatments, and be proactive in your tree care practices. By taking these steps, you can help protect your ash trees and preserve the beauty and health of your property.

For more information about emerald ash borer prevention, speak with a professional in your area.