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Emerald Ash Borers Pose Dangerous Threat to Life and Property

Updated: May 9, 2023

Emerald Ash Borer Beetle

The emerald ash borer (EAB) is an invasive insect that has killed millions of ash trees in North America. The EAB is a small, green beetle that was first discovered in Michigan in 2002. It is believed to have arrived in the United States from Asia in shipping materials. The EAB kills ash trees by tunneling under the bark and feeding on the tree's cambium layer. The cambium layer is the layer of tissue that transports water and nutrients from the roots to the leaves. When the EAB feeds on the cambium layer, it cuts off the tree's supply of water and nutrients, causing the tree to die.

Dead ash tree caused by EAB infestation

The EAB is a very destructive insect. It can kill an ash tree in as little as two years. The EAB has been found in 35 states and the District of Columbia. It is considered to be a major threat to ash trees in North America, causing billions of dollars in damage.

If you have an ash tree on your property, it is important to be aware of the signs of EAB infestation. Here are some of the signs that your ash tree may have EAB:

D-shaped holes in ash tree bark from EAB larvae
  • D-shaped holes in the bark

  • Staining or oozing sap

  • Bark splitting or peeling

  • Ash tree leaves turning yellow, wilting, or falling off

  • New "sucker" growth off main branches and trunk

If your ash tree is even moderately infested with EAB, it will likely be necessary to remove the tree. Even if the tree seems to have a lot of new growth, it is dying a slow, choking death due to the destruction of the cambium layer.

Ash tree cambium layer destruction caused by EAB larvae

Contact Timber Tree Service today and we will come assess your ash trees for any possible EAB infestations and recommend the proper course of action.

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