The Emerald Ash Borer was first confirmed in Indiana on April 21, 2004. Millions of ash trees stand dead throughout Ohio, Michigan, Illinois, and Indiana. Ever since its accidental introduction in the United States and Canada in the 1990's, the invasive Emerald Ash Borer has killed 50 to 100 million ash trees and threatens over 7 billion trees throughout North America. This pesky beetle only attacks ash trees. The beetles are metallic green with purple segments under their wings, about ½" long, and have flattened backs.
Since the infestation was identified and the public was informed, landscapers and homeowners have worked feverishly to mitigate the damage. The transfer of firewood has been strictly prohibited. Trees that have not yet been affected or have not been affected beyond repair have been treated. Affected trees have been removed. Landscape architects have introduced variety in tree planting as subdivisions that were full of ash trees had allowed the pest to prosper unhampered.
What has made the Emerald Ash Borer so difficult to control is its ability to survive and thrive and adapt to the conditions. The fact that the infestation may go unnoticed for the first couple of years allows the pest to do irreparable damage In fact, it may be that the Emerald Ash Borer has now adapted to another host.