| [[Image:betterhomesgardens-517948553-1169437905.jpg|hero]] | This dark fungal growth forms on the sticky secretions (called honeydew) produced by sap-sucking insects. |
It causes unsightly black mould to appear on leaves and stems but does not harm plants directly. Occasionally sooty mould will appear on shrubs growing under trees or palms infested with pests because their sugary secretions have fallen onto the leaves below.
Control:
If you remove the primary infection, such as the aphids, scale or psyllids, the sooty mould will disappear.
Hose the plant with a strong spray to assist in the clean up.
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