Infestation Location & Management Zones
Generally infested area
Emerald ash borer is in this zone, though not necessarily in all ash trees.
Potential expansion area
Emerald ash borer isn't known to be in the area, but the area is within 10 miles of the outer limits of the known infestation. There is a high probability emerald ash borer will spread naturally to this zone within a few years.
Alert area
Emerald ash borer isn't known to be in the area and it is more than 10 miles from the known infestation.
Emerald Ash Borer
Emerald Ash Borer (EAB) was found in Concord in March 2013, and the list of towns with known infestations continues to grow. As a non-native insect, EAB lacks predators to keep it in check. EAB attacks ash trees and infested trees die within 3 to 5 years.
PLEASE NOTE: The entirety of the state of New Hampshire is within the federal EAB quarantine area. Moving regulated products from anywhere in New Hampshire to non-quarantined areas, like the state of Maine, requires meeting federal regulatory requirements. Visit compliance agreements for more information. Ash movement within the state of New Hampshire is no longer regulated, however, moving ash risks spreading emerald ash borer. As such, we encourage professionals and landowners to follow best management practices when moving ash.
You can help protect New Hampshire's forests by reporting suspect trees or insects; considering insecticide treatment of some trees to keep ash in the understory; being aware of the risks of spreading EAB; and using best management practices to avoid transporting this pest to your favorite outdoor spot.
It takes years to decades for EAB to spread naturally; humans can spread it in hours.
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