What is this white film on the leaves of my shrubs and trees?

[carlos]

What is this white film on the leaves of my shrubs and trees?

[sanrob]

The white film you are seeing is most likely a fungal disease called powdery mildew. Powdery mildew attacks a wide variety of ornamental plants in North Carolina. The disease usually occurs during spring, fall, and winter months during cool weather with high relative humidity. Young plants with succulent new growth are particularly susceptible to powdery mildew problems

[carlos]

The fungus can infect leaves and flowers. Plants such as crape myrtle, roses, zinnias, and euonymous are particularly susceptible. If the problem is severe, prune out severely infected portions and then apply a fungicide such as sulfur

[sanrob]

copper, Immunox, or Funginex. Improve air circulation and rake up and destroy leaves in the fall.

[carlos · Accepted solution]

What is this black film on the leaves of my shrubs and trees?