What trees does verticillium wilt attack?
Maple especially, also ash, catalpa, redbud, smoke tree. One branch or one side wilts while the rest looks healthy. Olive-green streaking in the sapwood under the bark.
Outcome
A soil-borne fungus with no cure. Some trees wall it off and live for years; others decline over two or three seasons. Watering and feeding buys more time than any product does.
Indiana specifics
Common in Indiana maples, and frequently misdiagnosed as drought stress.
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