Emerald Ash Borer (Agrilus planipennis) is an exotic pest native to Asia. Experts believe it arrived in the United States in solid wood packaging materials. The Emerald Ash Borer (EAB) was first identified in Michigan in 2002 and was found the same year in nursery stock in Charles County, Maryland. Despite implementation of eradication programs around the source nursery and quarantines on the movement of timber and firewood, EAB has spread to nearly all counties west of the Chesapeake Bay.