problems Guide
Sooty moulds are fungi which cover plant leaves, stems and twigs in a black sticky substance.
In almost all cases, the sooty mould is secondary to an infestation of insects that secrete honeydew
These insects include aphids, scale, mealybugs and white flies
Treating the insects will remove the source of the honeydew and dry up the sooty mould, which will eventually fall or wash off the foliage.