Symptoms:
Bright orange spots on leaves and fruit.
Generally weakens tree. Fungi that cause cedarapple
rust complete part of their life cycle on red
cedar trees where in spring they cause large, bright
orange, sticky lesions at the ends of branches.
Solutions:
Cedar-apple rust can be reduced by
removing nearby Eastern red cedar trees. Apply a
copper soap fungicide 2 weeks before disease normally
appears, or when forecasters predict a long
period of wet weather. If disease has already
appeared, repeat at 7- to 10-day intervals for as long
as needed. Reapply after rain. We recommend Soap-
Shield Flowable Liquid Copper Fungicide.