All infected parts, except older fruit, are covered with white fungal growth during moist weather. The fungus overwinters primarily in infected leaves on the ground. It may survive as mycelium in buds during mild winters. Pre bloom sprays are necessary for control. This disease is especially destructive in climates like the one in Georgia.
Leaves have small chlorotic, irregular to circular spots with dark centers.
Spots may also occur on veins and petioles, and leaf margins may be turned under. Infected rachis, stems and petioles have dark brown to black streaks or blotches. Cluster stems may become brittle and break. Infected fruit become dark brown and brittle. Proper pruning is essential for the control of this disease.