The Minnesota Department of Agriculture (MDA) has confirmed the first emerald ash borer (EAB) infested tree in the southeastern city of La Crescent.

In August 2011, MDA found an emerald ash borer adult on a purple detection trap in La Crescent's Veterans Park, but at that time no infested trees could be found.

MDA staff worked with the city to continue surveys and recently discovered two EAB infested trees near the center of the city.

The city of La Crescent will host an informal open house on Wednesday, Jan. 16 from 5 - 6:30 p.m. at City Hall, 315 Main St.

The purpose of the open house is to inform citizens about the emerald ash borer and implications for residents with ash trees on their property.

Citizens will have the opportunity to ask questions of emerald ash borer experts. They can also learn about management options for infested trees.

Infestation signs include one-eighth inch, D-shaped exit holes in ash tree bark and winding tunnels under the bark.

The biggest risk of spreading EAB comes from people unknowingly moving firewood or other ash products harboring larvae.

Watch local ash trees for infestation. If you think an ash tree is infested, go to and use the "Do I Have Emerald Ash Borer?" checklist or call MDA at 1-888-545-6684 to report concerns.