The destructive path of the emerald ash borer (EAB) is still diminishing the nation’s supply of ash trees.
As of last month, EAB had been confirmed in 25 U.S. states (Arkansas, Colorado, Connecticut, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia, Wisconsin) and two Canadian provinces (Ontario and Quebec).
Currently, states in the Midwest like Illinois and Wisconsin are being hit hard.
The federal government says that ash is the most commonly planted tree in new residential and commercial developments, and that it makes up 20 to 40 percent of the landscape ecosystem in the Midwest.
So far, EAB has killed tens of millions of ash trees and threatens to kill most of the 7 billion ash trees throughout North America. It’s estimated that the borer will have caused more than $10 billion in economic damage by 2019, and EAB is the most destructive forest pest ever seen in North America.