EAB Infestation Map

Below is the current map of emerald ash borer (EAB) infestation across North America. The most recent additions to the infestation map are British Columbia (May 2024) and North Dakota (August 2024). An up-to-date map is available on our website.

EAB University is Back!

EABU's Spring 2025 Webinar Series kicks off in May, bringing together experts to discuss the latest research on invasive pests affecting forests, agriculture, and human health.

Webinars are open to the public and free to attend.

Elongate hemlock scale: phenology and impacts of Michigan’s new(ish) invasive hemlock pest



Toby Petrice, USDA

Tuesday, May 6th, 2025 at 11:00 AM

Real-time Forecasts of Phenology and Climate Suitability for Emerald Ash Borer in the United States



Brittany Barker & Erin Posthumus, Oregon State University

Tuesday, May 13th, 2025 at 11:00 AM

Hairy Situations: The browntail moth problem in Maine

Angela Mech, University of Maine

Thursday, May 15th, 2025 at 11:00 AM

Invasive mosquitoes and their implications for human health around the world and close to home

Sarah Short, Ohio State University

Thursday, May 22nd, 2025 at 11:00 AM

An Update on Ticks for 2025

Tim McDermott, Ohio State University Extension

Thursday, May 29th, 2025 at noon

Emerald Ash Borer Awareness Week 2025

​Emerald Ash Borer Awareness Week 2025 is May 18–24, and Don't Move Firewood is hosting a free webinar series to highlight the ecological and cultural impacts of EAB, as well as strategies for outreach and management. The lineup includes expert-led sessions on forest health, wetland resilience, and effective communication approaches. Topics range from long-term monitoring of EAB’s effects to the preservation of black ash in tribal communities.

All sessions are open to the public and free to attend!

Recent EAB News

Emerald Ash Borer Confirmed on Mount Desert Island

On April 1, 2025, the Maine Department of Agriculture, Conservation and Forestry confirmed the presence of EAB on Mount Desert Island—home to Acadia National Park—and expanded the state's EAB quarantine zone.

A bioeconomic analysis of objective-based management options for late-stage emerald ash borer (Coleoptera: Buprestidae) infestations

A new study in the Journal of Economic Entomology finds that in late-stage emerald ash borer infestations, the most effective long-term strategy is to gradually reduce treatments, slowly remove dying ash trees, and replant with other species to maintain urban forest value and control costs.

Emerald ash borer infestation creeps closer to Superior National Forest

A recent report from the Minnesota Department of Agriculture shows emerald ash borer moving closer to the Superior National Forest.

Preparing for the Emerald Ash Borer: Announcing our spring webinar series

​Maine Audubon is hosting a free four-part webinar series on select Thursdays at 6 p.m. from May 8 to June 12, 2025, focusing on the ecological and cultural impacts of the emerald ash borer and strategies to protect Maine's ash trees. ​

Other News

'Tis the season for squishing: What to know about spotted lanternflies

​The USDA advises the public to kill spotted lanternflies—an invasive species harmful to agriculture and ecosystems—by stepping on or swatting them. Controlling their spread is crucial to protect plants and trees.​

Pennsylvania Expands Spotted Lanternfly Quarantine to Four Northeast and Northwest Counties

On April 4th, 2025 Pennsylvania Agriculture Secretary Russell Redding announced that Bradford, Sullivan, Venango and Wyoming Counties have been added to the Pennsylvania counties quarantined due to confirmed populations of the invasive pest spotted lanternfly.