Answered for Cicero, Hamilton County.
Common under aphid-infested maple and linden in mid-summer. In Cicero, cicero has no public street-tree inventory, so species composition is not documented town-wide — but the age structure is: Morse Reservoir's roughly 35 miles of shoreline was about 95% built out with waterfront homes by 2020, and those lakefront lots hold the oldest, largest canopy in town, growing since the 1956 impoundment. Post-2015 subdivisions read very differently, with uniformly young front-yard stock, and ash is gone countywide after emerald ash borer reached all 92 Indiana counties by 2017. Harmless in itself — it grows on the honeydew, not on the tree.
Cicero has no public street-tree inventory, so species composition is not documented town-wide — but the age structure is: Morse Reservoir's roughly 35 miles of shoreline was about 95% built out with waterfront homes by 2020, and those lakefront lots hold the oldest, largest canopy in town, growing since the 1956 impoundment. Post-2015 subdivisions read very differently, with uniformly young front-yard stock, and ash is gone countywide after emerald ash borer reached all 92 Indiana counties by 2017.
Black soot-like film on leaves, branches, cars and patio furniture below the tree.
Harmless in itself — it grows on the honeydew, not on the tree. It is a symptom. Treating the mould achieves nothing; find the aphids or scale above it.
Deal with the insect, and the mould weathers off.
801 N 15th St, Noblesville, IN 46060
“Indy Lumberjacks did a fantastic job on removing our redbud tree. It was diseased and ready to fall. Dean Hudnall and his crew of Indy Lumberjacks…”
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605 Sheridan Rd Unit 5303, Noblesville, IN 46060
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820 E Main St, Westfield, IN 46074
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8811 Saville Rd, Noblesville, IN 46060
“I have used Green Tree Service for tree removal many times and each time they have far exceeded my expectations. Recently, a wind gust in our area…”
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14640 River Rd, Noblesville, IN 46062
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4621 E 146th St, Carmel, IN 46033
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Distance measured from Cicero.