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Emerald Ash Borer
About the Emerald Ash Borer
The emerald ash borer, agrilus planipennis fairmaire, is an exotic beetle that was discovered in southeastern Michigan near Detroit in the summer of 2002. The adult beetles nibble on ash foliage but cause little damage. The larvae (the immature stage) feed on the inner bark of ash trees, disrupting the tree’s ability to transport water and nutrients.

Emerald ash borers probably arrived in the United States on solid-wood packing material carried in cargo ships or airplanes originating in its native Asia. The emerald ash borer is also established in Windsor Ontario, and was found in New York State in the spring of 2009.

What to Know About Emerald Ash Borer 
  • It attacks only ash trees. 
  • Adult beetles are metallic green and about one-half inch long. 
  • Adults leave a D-shaped exit hole in the bark when they emerge in spring. 
  • Woodpeckers like emerald ash borer larvae. Heavy woodpecker damage on ash trees may be a sign of infestation.
  • Trunk sprouts (sucker on the trunk of the tree)
  • Crown thinning 
  • Firewood cannot be moved in New York State.

More Information
If you suspect you may have emerald ash borer in your trees, call New York State at (866) 640-0652.

If you are unsure your tree is an ash tree or you have any questions or comments, please feel free to contact us at (716) 875-8822.
Emerald Ash Borer in the fall
Emerald Ash Borer - side view
Emerald Ash Borer feeding on a leaf

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