Later the color turns to a powdery gray on the upper leaf surface as the fungus begins to produce spores. As the season progresses and the weather turns warmer and drier, the leaves turn yellow and dry and finally drop from the tree. Young twigs can also be infected. They are stunted and may be distorted and thickened and may die. Leaves that grow from such twigs are also stunted and distorted.
Infected twigs tend to die easily.
Fruit infections are not common but appear as wrinkled or swollen reddish lesions which lack the normal peach fuzz. Survival and Dispersal Spores which form on the surface of the leaf are the overwintering stage of the fungus. These spores are dispersed by the wind and splashing rain. They land in the cracks and crevices of the tree and in the bud scales where they rest until the following season. In the spring, spore germination is timed to coincide with the emergence of the leaf tissue.