The emerald ash borer has now infested nearly all of the eastern U.S. states and Canadian provinces. The pest has been spotted in another 15 U.S. counties since July 1.
The emerald ash borer probably arrived in the United States on solid wood packing material carried in cargo ships or airplanes originating in its native Asia. Since its discovery, EAB has killed hundreds of millions of ash trees in North America, and cost municipalities, property owners, nursery operators and forest products industries hundreds of millions of dollars.
For more information on the spread of the emerald ash borer, visit the Emerald Ash Borer Information Network.