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Emerald Ash Borer FAQs

By Stein Tree
Posted on May 25, 2020

The emerald ash borer (EAB) continues to be a significant problem for Pennsylvania and Delaware, and residents should be more aware to help protect their trees. To educate our customers and community about the dangers the emerald ash borer presents, Stein Tree has gathered some Emerald Ash Borer FAQs.

How Does EAB Kill Trees?

Emerald ash borer up-close view | Emerald Ash Borer FAQs | Stein Tree Service

An adult beetle lays eggs within the bark of an ash tree, which hatches about two weeks later. Once hatched, the larvae begin feeding on the bark, eating the inner tissue layers of the tree. The tissues that EAB larvae feed on are responsible for transporting nutrients and water. How long a tree takes to die after becoming infected depends on the size of the tree and the EAB population. Generally, infested small trees may die within 1-2 years, while large trees can be killed in 3-4 years.

Do All Ash Trees Get Emerald Ash Borer?

Almost all ash trees are at risk if the emerald ash borer continues to spread. American mountain-ash, or Sorbus americana, is one species of ash tree that has yet to be affected by emerald ash borer, as the species is not considered a true ash tree. EAB prefers ash trees that are stressed by disease or drought, but the pest will attack healthy trees as well.

Do Emerald Ash Borers Eat Other Trees?

Emerald ash borers almost exclusively feed on ash trees. In North America, the beetle has also been found to attack white fringetree, which is a non-ash species. However, the only widespread reports of trees damaged by EAB are about ash trees.

Cost of Treating Trees for Emerald Ash Borer

The cost of treating trees for emerald ash borer varies depending on how early the treatment begins and the severity of the damage. Price also depends on the size and the number of trees that need treatment.

How Can I Detect EAB?

The signs of an infestation can take a significant amount of time to be visible but can be spotted with diligence. Below are some of the main signs used to determine an EAB infestation:

  • Unexplained die-off on the upper canopy
  • Small tufted shoots on the trunk, called epicormic branching
  • Distinctive D-shaped holes left by emerging larvae
  • Vertical bark splits
  • Excessive woodpecker damage, from woodpeckers eating larvae

How Can We Get Rid of EAB?

The best method of getting rid of EAB is to be diligent of any signs or symptoms in your area and call a professional arborist to take care of the problem. First, professional arborists will be able to identify infestations accurately. Professional arborists who are certified to treat for EAB also have the knowledge, experience, and equipment to properly control and get rid of emerald ash borer while maintaining tree health.

Call Stein for Answers to Emerald Ash Borer FAQs, Inspection and Treatment

If you are concerned about emerald ash borer damaging your trees, contact Stein Tree Service. Our arborists, certified in Delaware and Pennsylvania for the treatment of EAB, know the best and safest preventive methods to help keep your trees safe. If you would like a free consultation or have any other emerald ash borer FAQs, contact Stein Tree Service.




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