For more than a decade, entomologists to the north have been monitoring a pest that has devastated ash tree populations.
Michigan was the first see the drama unfold, and all told since active monitoring of the emerald ash borer first began, an estimated 40 million trees have been killed.
It was inevitable that the pest would move south, despite active efforts to contain the pest through quarantines, voluntary and mandatory felling of ash trees and a campaign to prevent the movement of firewood out of infected areas.