Emerald ash borers are not native to North America. Until recently, they were found only in parts of Asia.
These destructive insects arrived from Asia in packing material made from ash wood. Although they were first detected in Detroit in June, 2002, EAB probably arrived there 10 to 12 years before they found.
On its own, Emerald Ash Borer (EAB) moves slowly through the landscape, only about half of a mile per year.
People greatly accelerate EAB's expansion when they move infested ash firewood and logs to new areas. EAB infestations outside of the Detroit area are the result of people moving ash firewood, nursery stock, and logs.
For a wide array of information on Emerald Ash Borer, including how to manage it, please visit the Purdue Extension Emerald Ash Borer Website.