USDA's Emerald Ash Borer Program Report Update | December 21, 2022

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Header for report showing blue rectangle with white United States Department of Agriculture logo and picture of the emerald ash borer

December 21, 2022

USDA’s Animal and Plant Health Inspection Service (APHIS) works with State, Federal, and other partners to detect and manage known emerald ash borer (EAB) infestations. The EAB program uses biological control and ongoing research to minimize the impact from an infestation and maintain ash as a viable part of the American landscape. This report provides the most current information on EAB program efforts.


New Policy Manager

With over 20 years of experience working in APHIS’ Plant Protection and Quarantine program, Dr. Ron Weeks is the new National Policy Manager for Emerald Ash Borer, Biocontrol, Imported Fire Ant, Roseau Cane Scale, and South American Cactus Moth programs. He served as Acting EAB National Policy Manager earlier this year. Dr. Ron Weeks can be reached at 919-559-4311 or

EAB in the United States

EAB is in 36 states and the District of Columbia: Alabama, Arkansas, Colorado, Connecticut, Delaware, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Vermont, Virginia, West Virginia, and Wisconsin. 

Image of the emerald ash borer infestation in the United States interactive map

The image above shows where EAB is in the United States, with the purple areas being found in 2022, the green areas being found in 2021, and the blue areas being found in 2002-2020. Click the image or click interactive map for more details.

Biological Control

USDA uses emerald ash borer's natural enemies as biocontrol agents—these tiny stingless wasps are showing promise in terms of protecting young ash saplings in a number of states.

Table showing the type of parasitoid released and the quantity released


During the 2022 season, APHIS together with biological control partners, released parasitoids in 27 new counties. Bringing the program’s total number of releases to 418 counties in 31 states and the District of Columbia.


To date, parasitoids have been recovered in 23 states: Colorado, Connecticut, Delaware, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Tennessee, Virginia, Wisconsin, and in 2 Canadian provinces: Ontario and Quebec. This means the wasps are establishing, reproducing, and killing EAB.


If you completed first-year releases in 2022, you will release the same parasitoids at the same sites again in 2023 since all parasitoid species receive two consecutive years of releases. For sites starting in 2023, approximately 100 new sites will be accepted for first year releases, and top priority will be given to new states and counties.


All recovery data must be entered into as soon as possible but no later than 12 months after the final release in an area. A minimum sampling of one release site per county is required. If you have questions, please contact Russ Bulluck at 919-855-7182 or

To learn more about biological control releases, please visit APHIS’ EAB Program webpage. If you have questions, please call 1-866-322-4512 or email


APHIS scientists are studying how Integrated Pest Management (IPM) might be used in a forest ecosystem to significantly reduce and control EAB populations. IPM combines a variety of tools and strategies to identify, manage, and reduce risks and impacts from pests.


APHIS is providing traps and lures to conduct surveys. You can request traps, lures, and accessories through your State Plant Regulatory Official or you can order them through the Integrated Plant Health Information System (IPHIS). Please remember to enter your survey data weekly into IPHIS.

Latest Maps

Infested Counties Map (Interactive)

Time Series Spread Map

Ash Range Map

Additional Resources

Informational Websites


EAB Information Network

EAB National Invasive Species Information Center

Outreach Materials

Debarking Ash Video

Pest Alert



EAB National Policy Manager

Ron Weeks, 919-559-4311

EAB National Operations Manager

Russ Bulluck, 919-855-7182

If you think you’ve found EAB or signs of infestation, record the area where the specimen was found and take digital pictures of the insect and tree damage. Submit your report to your State Plant Health Director, or email, or call the EAB hotline at 1-866-322-4512. Thank you.