Depressing news from the Pennsylvania Landscape & Nursery Association: Pennsylvania soon won’t be a very friendly place for the state’s namesake Pennsylvania ash tree (Fraxinus pennsylvanica), along with other ash species. Two-thirds of the state is under quarantine from the emerald ash borer after the tree-killing insect was discovered in seven more counties. State agriculture officials believe that the entire state will be infested with the beetle in two or three years’ time. Their focus now is on gathering seeds to preserve the species “for a future time,” PLNA reported. It’s believed the beetle came to the United States via wooden shipping crates from Asia. You can see where the bug has been detected on this map (PDF).