Emerald ash borer discovered in Fargo

FARGO (KVRR) – State officials say insect larva found by city of Fargo forestry staff has been confirmed to be emerald ash borer.

This is the second discovery in North Dakota. The first was in LaMoure County in August, 2024.

“This detection is unfortunate, but not surprising, considering the insect was detected in Moorhead in 2023,” Agriculture Commissioner Doug Goehring said.

“The North Dakota Department of Agriculture and our partners are prepared and will monitor the infestation. Travelers should leave firewood at home and purchase or gather from local sources, if allowed, to prevent further spread.”

Emerald ash borer is a wood boring insect originally from Asia which was first found in the U.S. in 2002. It has since spread to 37 states and killed hundreds of millions of ash trees. Emerald ash borer adults do not fly more than a mile or two on their own; however, they can be moved long distances through the movement of firewood, tree trimmings and ash nursery stock.

North Dakota has more than 90 million ash trees in native and rural forests, and ash trees make up between 20% to 80% of the trees along city streets and parks.

Unless treated, infested ash trees can be killed in a few years. Treatments are not recommended until EAB is detected within 15 miles. Residents who treat their ash trees are strongly urged to select a certified applicator. Most treatments are restricted use and can only be done by a tree care professional.