A well-watered plant that suddenly wilts or unexpectedly drops its leaves could be infected with the soil pathogen Phytophthora. The disease it causes, Phytophthora root and crown rot, can affect many plants, including ornamental trees and shrubs, fruit trees, and vegetables.
While you may not notice symptoms of peach leaf curl until the spring, you should manage it in the fall and winter. Peach leaf curl is a fungal disease that primarily affects peach and nectarine trees.
