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.

It's Time to Treat Your Ash Trees!

Adult EAB are beginning to emerge in the mid Michigan area. When you see black locust trees in full bloom, you can be sure the adult EAB beetles are emerging from their host tree. Now is a great time to treat your ash trees to protect them from EAB. Systemic insecticides are most effective when adult beetles are controlled before they begin laying eggs.

EAB Adult Emergence

Recent EAB News

City of Toronto begins treatment to protect vulnerable ash trees

Between June and August, the City of Toronto will treat over 5,300 ash trees with a protective insecticide to help combat the invasive EAB. Since arriving in 2007, EAB has killed more than 800,000 ash trees in the city. These biennial treatments target the beetle’s larvae to reduce populations and improve the chances of tree survival.

EAB Biocontrol Agents to be Released in Oregon Counties

The Oregon Department of Agriculture has added Marion, Clackamas and Yamhill counties to its biological control program against EAB. “Stingless” parasitic wasps are being released from June through October to help reduce beetle populations. These wasps target EAB larvae, pose no harm to people or wildlife and have shown success in slowing the pest’s spread in other states.

EAB Confirmed for the first time in Linn County, Kansas

The Kansas Forest Service has confirmed the detection of EAB in Linn County, making it the 16th county in Kansas with a confirmed presence of the invasive pest.

Other News

Four-legged investigators sniff out spotted lanternfly eggs

Specially trained dogs are now being used in Cleveland, Ohio, to detect spotted lanternfly egg masses. Since late 2024, these dogs have uncovered over 4,000 egg masses in local parks, potentially preventing up to 200,000 lanternflies from hatching. Trained through a Virginia Tech-led program, the dogs identify egg masses hidden on various surfaces, allowing handlers to eliminate them and protect vulnerable crops like grapes and fruit trees.