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Emerald Ash Borer Update

Emerald ash borer continues to spread throughout the northeast and threatens millions of ash trees in our landscape. One of the best ways to slow the spread is to stay informed and to make a conscious effort to follow government guidelines and recommendations.

We encourage you to explore the maps and information included below. Above all, start thinking about your plans for managing ash trees within your landscape. Chippers’ arborists can help you decide if a tree is worth preserving or if removal is the best option. Our treatment method is a trunk injection that provides two years of protection from emerald ash borer (EAB).

Please be sure to reach out to us with any questions.

From the Vermont Agency of Agriculture and Department of Forests

Map of VT Infested Areas

Several new detections of the EAB in northwest Vermont have expanded the current infested area into Franklin County. The map of the infested area in Vermont to which “Slow the Spread” recommendations apply now includes new areas in the towns of Isle LaMotte, North Hero, St. Albans, Swanton, and Highgate. A small area in the town of Sheldon is now also included in the infested area.

Purple Traps Aided in Discoveries

The new detections were discovered on purple prism traps, a tool used to monitor for EAB. A group of dedicated volunteers along with staff from the Department of Forests, Parks and Recreation placed these traps in the branches of ash trees throughout the state earlier this summer. The traps’ color appeals visually to EAB.

Additionally, the traps contain an attractant and are covered in an adhesive so any insect that lands on them will get stuck, including EAB. Adult EAB beetles emerge from trees during the flight season, which typically spans from June 1st through September 30th. Traps are checked twice, once in mid to late July, and again at the end of September. All suspicious insects stuck on them are removed and inspected by an entomologist for confirmation.

Non-flight Season Started Two Weeks Ago

October 1st began EAB’s non-flight season and started the optimal time to move ash materials from the infested area according to the “Slow the Spread” recommendations. Despite the expansion of the infested area, less than 10% of Vermont’s land area is known to be infested by EAB.

As a result, we recommend following “Slow the Spread” recommendations to help protect uninfested forests and to give time to landowners, communities, and businesses to plan and budget for the arrival of EAB. Visit to learn more about EAB and what you can do to “Slow the Spread”.

From the New Hampshire Department of Agriculture

Map of NH Infested Areas

Currently nine out of 10 NH counties have EAB, excluding only Coos. This invasive insect threatens millions of ash trees in our area. The most recent finds have been in Francestown, Croydon, Exeter, Durham, Sandown, Danville, New Ipswich, Greenville, and Rindge. Croydon is the first detection in Sullivan County and Rindge is the first in Cheshire County. These new discoveries are reflected in map of the infested areas in New Hampshire.

Websites with more information about EAB that threatens millions of ash trees

VT Invasives

State of Vermont

NH Bugs

State of New Hampshire

Plant Health Care at Chippers