Signs to Watch For on Harrisburg Ash Trees
Harrisburg · Ash Tree Treatment · Step 2 of 5
Harrisburg Fact Bank
County Lincoln County
EAB status county-quarantined
Population ~10,400 (2024 estimate)
Every fact cited
Canopy thinning, D-shaped exit holes, bark splitting over S-shaped tunnels, and increased woodpecker activity are the signs to know. Given Lincoln County’s quarantine status, treat these signs with more urgency here than in a not-yet-confirmed county — get an arborist out the same season if you spot two or more together.
Frequently Asked
01
Does living in a quarantined county mean my tree definitely has EAB?
No — quarantine status reflects county-level confirmed activity, not that every tree is infested. Each tree still needs its own assessment, but the local risk is real enough to act on signs promptly.