Answered for Danville, Hendricks County (county seat) County.
Present in Indiana and the reason for the pruning rule below. It's the single best argument against 'we'll just tidy the oak up in June'. In Danville, the Main Street Historic District developed circa 1844–1920 across just 9 acres and 37 contributing buildings, and the Courthouse Square district circa 1865–1960 over 70 acres — those blocks hold the town's oldest and largest trees on narrow lots with sidewalks on both sides. Danville does actively manage its right-of-way canopy through a standing Tree Advisory Committee, though the specific inventory and replanting-ratio requirements attributed to Chapter 97 could not be verified. A red oak showing symptoms is usually lost within a season.
The Main Street Historic District developed circa 1844–1920 across just 9 acres and 37 contributing buildings, and the Courthouse Square district circa 1865–1960 over 70 acres — those blocks hold the town's oldest and largest trees on narrow lots with sidewalks on both sides. Danville does actively manage its right-of-way canopy through a standing Tree Advisory Committee, though the specific inventory and replanting-ratio requirements attributed to Chapter 97 could not be verified.
Rapid wilting from the top down in summer, leaves dropping while still half green, often one side of the canopy first.
A red oak showing symptoms is usually lost within a season. The urgent job is protecting the oaks around it, because it moves underground through grafted roots.
Never prune an oak here between April and July — that's when the beetles carrying it are active and a fresh cut is an open invitation. Dormant-season pruning only.
240 Old North Salem Rd, Danville, IN 46122
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Distance measured from Danville.