Answered for Danville, Hendricks County (county seat) County.
Common on Indiana maple and linden in mid-summer. 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. Rarely a health problem for a mature tree.
Danville's canopy and what's at risk
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.
What to look for
Sticky honeydew on everything under the tree, curled leaves, ants running up the trunk, sooty mould following.
Whether the tree can be saved
Rarely a health problem for a mature tree. It's a nuisance problem — the honeydew is what makes people call.
Timing in Hendricks County (county seat) County
Usually resolves on its own as predators build up. Treatment is for the mess, not the tree.
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