Philip Marshall, State Entomologist with the Indiana Department of Natural Resources, notified me last week that the Emerald Ash Borer has been discovered in Posey County, Indiana. Last year, this insect was discovered in Warrick County. Although the insect has not been positively identified in Vanderburgh or Gibson Counties yet, I think it’s a pretty safe bet that they’re out there somewhere, and we just haven’t spotted them.
The Emerald Ash Borer (EAB) is an exotic invasive insect that was first discovered in Michigan in 2002, and has been spreading in all directions ever since. It attacks predominately ash trees (anything in the genus Fraxinus), but has also been found in the closely related fringe tree (Chionanthus virginicus). It is estimated that over 250 million ash trees have already been killed in the US due to this insect.
Because EAB basically brackets us here in the Evansville area, I am planning on holding at least two workshops later this winter to help property owners and tree companies. Dates have not been set yet, but I am planning on holding one program on the west side of Vanderburgh County, and one on the east side. We will cover how to recognize ash trees in the landscape; how to identify EAB and its damage; and how to protect your trees. When we lock in some dates and locations, I will list them in these Hort Alerts.
In the meantime, you can visit the Purdue EAB website for more information: http://extension.entm.purdue.edu/EAB/ .