What trees does cedar apple rust attack?
Needs both eastern red cedar and an apple or crabapple to complete its cycle. Orange gelatinous horns on cedar in spring; orange spots on apple and crabapple leaves.
Outcome
Disfiguring rather than deadly. It matters most to orchards and to anyone who wants a clean crabapple.
Indiana specifics
Common wherever red cedar has colonised a fence line near apples — which in rural Hendricks and Boone counties is nearly everywhere.
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