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Cedar-Apple Rust

Description: Bright orange spots on leaves and fruit. Generally weakens tree. Fungi that cause cedar-apple rust complete part of their life cycle on red cedar trees where in spring they cause large, bright orange, sticky lesions at the end of branches.




Solution: Cedar-apple rust can be reduced by removing nearby eastern red cedar trees. Apply Soap-Shield Fungicidal Soap two weeks before disease normally appears, or when forecasters predict a long period of wet weather. If disease has already appeared, repeat at 7-10 day intervals for as long as needed. Reapply after rain. If leaf burn develops, use Bordeaux Mixture or Rotenone/Copper Combo Combo 7 days after petal fall and 2 weeks later.

 



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