What trees does oak wilt attack?
All oaks. Red oak group dies fastest; white oaks often survive years. Rapid wilting from the top down in summer, leaves dropping while still half green, often one side of the canopy first.
Outcome
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.
Indiana specifics
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'.
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