Sooty Mold

Sooty Mold

Joseph OBrien, USDA Forest Service, Bugwood.org

Description

Description

Sooty Mold is a thread-like, black-colored fungus that grows in honeydew secretions left by insect pests like Scale, Whitefly and Aphids.

Damage

Sooty Mold on the topsides of leaves interferes with photosynthesis by blocking sunlight. Along with the honeydew, it is sticky and drips from trees in summer heat making a mess of walkways, cars and pavement. Left untreated, it can lead to stunted growth and premature leaf drop. In order to control Sooty Mold, you have to control the insect pest secreting the honeydew. 

Cultural Solutions
  • Control insect pests like Scale, Whitefly and Aphids.
  • Also control Ants that may be harboring pests.