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EAB now found in Scott County

Jeffrey Hahn, Extension Entomologist

Woodpecker activity on ash is a red flag for
EAB. Photo: Jeff Hahn, UMN Extension
(The following information is taken from an August 25, 2015 news release from the Minnesota Department of Agriculture)

The Minnesota Department of Agriculture (MDA) announced today that emerald ash borer (EAB) was confirmed for the first time in Scott County. The MDA received a call through their Arrest the Pest information phone line (888-545-6684) alerting them to a suspicious ash tree on private property in Prior Lake. An onsite visit confirmed an EAB-infested tree.

Scott County becomes the 10th county in Minnesota to verify EAB, joining Anoka, Dakota, Hennepin, and Ramsey counties in the metro area; Chisago County north of the metro and Fillmore, Houston, Olmstead, and Winona counties in southeastern Minnesota.

Scott County will be put under an emergency quarantine and will eventually join the above counties in a state and federal quarantine. A quarantine helps prevent the spread of EAB by restricting the movement of ash products including ash trees and limbs and all hardwood firewood.

The MDA reminds residents of things to watch for when looking for EAB.

1. Be sure you’ve identified an ash tree. This is an important first step since EAB only feeds on ash trees. Ashes have opposite branching – meaning branches come off the trunk directly across from each other. On older trees, the bark is in a tight, diamond-shaped pattern. Younger trees have a relatively smooth bark.

2. Look for woodpecker damage. Woodpeckers like EAB larvae and woodpecker holes may indicate the presence of EAB.

3. Check for bark cracks. EAB larvae tunneling under the bark can cause the bark to split open, revealing the larval (S-shaped) tunnels underneath.

4. Contact a professional. If you feel your ash tree may be infested with EAB, contact a tree care professional, your city forester, or the MDA at or 888-545-6684.

For more information about EAB, see Emerald ash borer in Minnesota. See also the MDA news release, MDA confirms emerald ash borer find in Scott County.
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