Answered for McCordsville, Hancock County.
It has already moved through Indiana and killed the overwhelming majority of untreated ash. An untreated ash here is on a clock, not at risk. In McCordsville, the canopy is almost entirely developer plantings on former corn and soybean ground, young enough that overall cover is thin compared with older Indianapolis suburbs; the genuinely large trees are leftovers — fencerow and creek-bottom hardwoods along Fall Creek and toward Geist, plus the yard trees around the 1865 village core. McCordsville was not in the Indiana DNR street tree sample and has no published inventory; note that Callery pear, heavily used in subdivisions of this vintage, was still legal to sell in Indiana as of 2026 despite a pending proposal to ban it. Treatable while the canopy is still mostly intact.
The canopy is almost entirely developer plantings on former corn and soybean ground, young enough that overall cover is thin compared with older Indianapolis suburbs; the genuinely large trees are leftovers — fencerow and creek-bottom hardwoods along Fall Creek and toward Geist, plus the yard trees around the 1865 village core. McCordsville was not in the Indiana DNR street tree sample and has no published inventory; note that Callery pear, heavily used in subdivisions of this vintage, was still legal to sell in Indiana as of 2026 despite a pending proposal to ban it.
Thinning from the top down, D-shaped exit holes about an eighth of an inch across, sprouts low on the trunk, and pale flecking where woodpeckers have stripped bark to get at larvae.
Treatable while the canopy is still mostly intact. Once roughly a third of it is gone, treatment stops being worth the money and the tree becomes a removal — and a dead ash goes brittle unusually fast, which makes it both more dangerous and more expensive the longer it stands.
Trunk injection in spring or early summer, repeated every one to two years for the life of the tree. It is a permanent commitment, not a cure.
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Distance measured from McCordsville.