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 Fishers, fishers was not one of the 23 communities in Indiana DNR's street-tree sample inventory, so no verified species breakdown exists for the city. What is documented is that the Tree Board maintains a list of desirable and undesirable species and no species off that list may be planted as a street tree without special permission — the practical picture being a 1990s-2000s nursery palette in tight uniform age classes, with ash gone since EAB was confirmed in Indiana in 2004. A red oak showing symptoms is usually lost within a season.
Fishers's canopy and what's at risk
Fishers was not one of the 23 communities in Indiana DNR's street-tree sample inventory, so no verified species breakdown exists for the city. What is documented is that the Tree Board maintains a list of desirable and undesirable species and no species off that list may be planted as a street tree without special permission — the practical picture being a 1990s-2000s nursery palette in tight uniform age classes, with ash gone since EAB was confirmed in Indiana in 2004.
What to look for
Rapid wilting from the top down in summer, leaves dropping while still half green, often one side of the canopy first.
Whether the tree can be saved
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.
Timing in Hamilton County
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.
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