Answered for Cumberland, Marion County (town limits extend east and north into Hancock County) County.
Every July, reliably. Linden and crabapple get hit hardest here. In Cumberland, the biggest and oldest trees stand in Old Town along US 40, over houses on a corridor continuously settled since 1831 — that is where a crew will meet 100-plus-year specimens with structures under them on both sides. Buck Creek carries the bottomland canopy, the east-side Hancock County subdivisions date from the 1970s through the 2000s and their canopy is mid-life, and ash has been removed across central Indiana by emerald ash borer; no published street-tree inventory exists for the town. Ugly, rarely fatal to an established tree.
Cumberland's canopy and what's at risk
The biggest and oldest trees stand in Old Town along US 40, over houses on a corridor continuously settled since 1831 — that is where a crew will meet 100-plus-year specimens with structures under them on both sides. Buck Creek carries the bottomland canopy, the east-side Hancock County subdivisions date from the 1970s through the 2000s and their canopy is mid-life, and ash has been removed across central Indiana by emerald ash borer; no published street-tree inventory exists for the town.
What to look for
Leaves skeletonised to lace, worst at the top of the tree, through July.
Whether the tree can be saved
Ugly, rarely fatal to an established tree. A mature linden can lose most of its leaves in July and be fine the following spring.
Timing in Marion County (town limits extend east and north into Hancock County) County
Treatment is a July problem, and hanging beetle traps near the tree makes it worse — they attract more beetles than they catch.
“This is the second time we have hired Holmes for tree work at our home. A few years ago they removed a tree that was too close to our home and did an…”
“Had a tree fall on my home, my mother knew one of the employees (Conner) he got in touch with Scott who came from near Indy all the way to Fort Wayne…”