Infected flower parts fall on the leaves spreading the infection. Botrytis can be controlled with benomyl. A large number of leaf spots attack dogwood. No chemical controls are listed. Clean up and dispose of infected leaves.
Powdery mildew coats the leaves with a fine white coating.
This disease may be controlled with sprays of benomyl used according to label directions. Leaf scorch occurs during hot, dry, windy weather. This condition looks like a disease. Scorch symptoms are drying and browning of the leaf margins, or, in more serious cases, drying and browning of the interveinal area. This information is for educational purposes only.