Emerald Ash Borer Detected in Fargo, North Dakota

Experts advise residents to watch for signs of the invasive pest in ash trees

Jan. 31, 2026 at 9:31am

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The North Dakota Department of Agriculture has confirmed the presence of the Emerald Ash Borer (EAB) in Fargo, North Dakota, raising concerns about the potential impact on the city's ash tree population. EAB is an invasive insect that has decimated millions of ash trees across 37 states, and its discovery in Moorhead, Minnesota just across the river from Fargo, made its arrival in Fargo inevitable.

Why it matters

Ash trees make up a significant portion of the tree population in North Dakota cities, farmsteads, shelterbelts, and along river valleys. EAB can kill an ash tree within several years of initial infestation, posing a major threat to the state's urban forests and rural landscapes if left unchecked.

The details

The adult EAB beetles are difficult to detect, and the larvae that cause internal damage to the tree's system are concealed inside the tree. However, there are some visible signs that can indicate a potential EAB infestation, such as the presence of 'D'-shaped exit holes and woodpecker activity as the birds try to access the larvae beneath the bark.

  • The Emerald Ash Borer was first discovered in Moorhead, Minnesota, several years ago.
  • The presence of EAB in Fargo, North Dakota, was confirmed this past week.

The players

North Dakota Department of Agriculture

The state agency responsible for providing information and guidance on the Emerald Ash Borer and serving as the clearinghouse for reporting suspected infested ash trees.

Ash Trees

A significant portion of the tree population in North Dakota cities, farmsteads, shelterbelts, and along river valleys that are susceptible to the Emerald Ash Borer.

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What’s next

The North Dakota Department of Agriculture is urging residents to monitor their ash trees for signs of EAB infestation and report any suspected infested trees through their website. Early detection and treatment are crucial to preventing the widespread loss of the state's ash tree population.

The takeaway

The arrival of the Emerald Ash Borer in Fargo highlights the need for proactive measures to protect North Dakota's urban forests and rural landscapes from the devastating impact of this invasive pest. Residents should familiarize themselves with the signs of EAB and report any suspected infestations to the state authorities.