10/13/2026
This pest is… emerald ash borer (EAB)! This invasive pest has had a major impact on ash trees across Wisconsin.
As leaves thin out in the fall, it's easier to see canopy dieback, D-shaped exit holes in the bark, and increased woodpecker activity, all signs that EAB may be present.
If you've got ash trees on your property, now is a good time to have them inspected before winter. Early detection makes a real difference in treatment options.