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

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EAB University The 2018 Fall 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 October 2018, it is now found in 35 states, and the Canadian provinces of Ontario, Quebec, New Brunswick, Nova Scotia and Manitoba.

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 October 1st, 2018
Click to enlarge

Changes/additions included since September 6th 2018:

  • Initial county detection in:
  • Grundy County, IA
  • Wright County, MN
  • York County, ME
  • Providence County, RI

  • Added to the list of counties quarantined by their state:
  • Wright County, MN

  • Canadian initial county detections and initial detection in Province of Nova Scotia:
  • Halifax County, NS

  • Addition to the Canadian EAB regulated area is as follows:
  • Madawaska County, excluding the municipality of Grand Falls, NB

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


Check out the 2018 Fall Webinars