Sooty mold is a fungal disease. It typically grows on surfaces covered in honeydew produced by insects. The infected plant has its twigs, branches, or leaves covered in characteristic black soot.
Black or dark brown, superficial fungal growth on the aerial parts of plants, particularly the upper leaf surfaces.
The amount of growth can vary from a fine soot-like or powdery deposit, to a thick sheet of growth that may crack or peel away from the leaf surface during dry conditions.
The growth can sometimes be washed away, leaving a healthy-looking leaf surface beneath.
Sap-sucking pests such as aphids, scale insects, mealybugs or whiteflies can often be found on the plant, above the point where the sooty mould is growing.
In some cases these insects may occur on plants that overhang those affected with sooty mould.
Ants may also be seen in association with the sap-sucking pests.
Leaves, stems, fruit, etc. where the sooty moulds are growing are contaminated with sticky honeydew.
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