This Website is part of a multinational effort to bring you the latest information about emerald ash borer.

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EAB confirmed in state
State EAB information available

EAB University The 2018 Spring session has been posted!

EAB University

Head back to school to learn the latest about what is being done to address emerald ash borer and other invasive species in North America.

Emerald Ash Borer

Emerald ash borer (EAB), 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 borer probably arrived in the United States on solid wood packing material carried in cargo ships or airplanes originating in its native Asia. As of August 2017, it is now found in 31 states, and the Canadian provinces of Ontario and Quebec. Since its discovery, EAB has:

  • Killed hundreds of millions of ash trees in North America.
  • Caused regulatory agencies and the USDA to enforce quarantines and fines to prevent potentially infested ash trees, logs or hardwood firewood from moving out of areas where EAB occurs.
  • Cost municipalities, property owners, nursery operators and forest products industries hundreds of millions of dollars.

Recommended Resources

Initial county EAB detections in North America & Canada

PDF Map of EAB Locations
As of March 1 st, 2018
Click to enlarge

Changes/additions included since the February 1 st, 2018:

  • Initial state detection in:
  • Orange County, VT
  • The addition of initial county detections in:
  • All counties in Georgia (96 additional)
  • Bienville, Jackson, Morehouse and Ouachita Parishes, LA
  • Martin County, MN
  • Strafford County, NH

Important Information

Insecticide Options for Protecting Ash Trees
June 2014 - Second Edition

Tree Care Specialists - Arborists - Homeowners

This bulletin answers your questions about, and offers insecticide options for controlling EAB.

Coalition for Urban Ash Tree Conservation EAB Management Statement

This endorses ash tree conservation in urban areas as part of an integrated EAB management program. It is supported by university scientists, commercial arborists, municipal foresters, public works officials, and non-governmental organizations (NGOs).

Additional Letters of Support

What To Know About EAB

adult eab
Adult Beetles are metallic green and about 1/2-inch long.
It attacks only ash trees (Fraxinus spp.)
d-shaped exit hole
Adults leave a D-shaped exit hole in the bark when they emerge in spring.
Woodpeckers like EAB larvae; heavy woodpecker damage on ash trees may be a sign of infestation.
Firewood cannot be moved in many areas because of the EAB quarantine.
packing crate
It probably came from Asia in wood packing material.

News & Information

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EAB University

Emerald Ash Borer University

The Spring 2018 EAB University line-up of webinars has been posted!


Check Out The 2018 Spring Webinars