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The Risks of Emerald Ash Borer in Wilmington, DE

Emerald Ash Borer Wilmington DEAsh trees being attacked by the Emerald Ash Borer has resulted in the loss of many beautiful trees and Wilmington, Delaware is now at risk. This invasive beetle has recently been found in Delaware and will continue to spread without preventive actions. Local agencies encourage homeowners to actively participate in the campaigns against EAB. The trees grow widely in Wilmington and most Delaware counties, cities, and towns.

The Emerald Ash Borer (EAB) invaded the US in 2002 and the battle against these beetles continues today. Almost 27 states in the United States are concentrating their efforts to control the spread and prevent further infestation. Early detection is key to combating these highly invasive insects. One accepted means to treat these wood-boring beetles is by injecting systemic insecticide into the soil near the ash tree.

Signs and Symptoms of Emerald Ash Borer Infestation

The ash trees in Wilmington are vulnerable and are a target for the ash borers. Homeowners are asked to make a regular assessment of their ash trees and watch out for these signs and symptoms of Emerald Ash Borer (EAB) infestation:

  • During early stages, Emerald Ash Borer infestation causes a thinning of the tree’s crown resulting from larvae sucking out the tree’s nutrients to survive.
  • Later signs may include bark splitting or excessive sprouting from the base of the tree.
  • Presence of woodpeckers also indicates possible EAB infestation.
  • Serpentine or S-shaped patterns found in the trunk are also a good indicator of Emerald Ash Borer.
  • In the final stage of the ash borer cycle, the adults bore out of the wood, leaving tiny D-shaped exit holes about 1/8” in diameter.

Treatment for EAB Damage

Some ash trees are treatable if caught early enough. For slightly damaged ash trees, there is insecticide available that can be used to control and prevent further spread. Arborists recommend that more advanced ash tree damage requires tree removal and tree replacement. If you have an ash tree and see its canopy deteriorating, call a professional arborist that services the Wilmington area in Delaware. They are capable of diagnosing the severity and overall health of your tree and will recommend the best intervention.

Call 302-478-3511 or 302-731-1718 or request a Emerald Ash Borer consultation for your ash tree.
Stein Tree Service is licensed to treat for emerald ash borer in Delaware and Pennsylvania.



Serving DE, PA and MD


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