Answered for Shelbyville, Shelby County.
Still active. It's why mature American elms are rare here now, and why the ones that survive are worth protecting. In Shelbyville, shelbyville is the only town of its size around here with real canopy data coming: the Planning Department hired Davey Resource Group under an Indiana DNR grant to inventory every tree on city property and in the public rights-of-way from April through Memorial Day 2025, recording species, size and health, flagging invasives, and marking dead or hazardous trees and stumps for removal. Age tracks the housing rings — full-size canopy over the 1853-1939 Westside and the 1950s additions, and by inference much younger stock on recently annexed ground north of the city — with ash functionally absent after emerald ash borer reached all 92 Indiana counties by 2017. A rapid one-season decline usually means removal.
Shelbyville is the only town of its size around here with real canopy data coming: the Planning Department hired Davey Resource Group under an Indiana DNR grant to inventory every tree on city property and in the public rights-of-way from April through Memorial Day 2025, recording species, size and health, flagging invasives, and marking dead or hazardous trees and stumps for removal. Age tracks the housing rings — full-size canopy over the 1853-1939 Westside and the 1950s additions, and by inference much younger stock on recently annexed ground north of the city — with ash functionally absent after emerald ash borer reached all 92 Indiana counties by 2017.
Flagging — one branch yellows and wilts while the rest looks fine — then rapid decline through the crown.
A rapid one-season decline usually means removal. Fungicide injection can protect a high-value elm that isn't yet infected, but it does not rescue one that is well along.
Preventive injection every two to three years, before symptoms.
11219 House St, Indianapolis, IN 46259
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4621 S Brooklawn Dr, New Palestine, IN 46163
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201 S Morton St, Franklin, IN 46131
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646 S 600 W Building #5, New Palestine, IN 46163
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5067 W US Hwy 40, Greenfield, IN 46140
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Distance measured from Shelbyville.