Why does your Abutilon striatum have sticky leaves? Diagnose the cause and fix it with our step-by-step guide.
Aphids are small, soft-bodied insects that pierce the tender stems and leaves of Abutilon to suck sap, excreting a sugary substance known as honeydew. This residue creates a visible sticky film on the leaf surfaces.
Scale insects attach themselves to the stems and leaves of Abutilon, feeding on phloem sap and secreting honeydew. This can lead to a sticky coating that may eventually support the growth of black sooty mold.
Whiteflies congregate on the undersides of Abutilon leaves, feeding on plant fluids and leaving behind sticky honeydew. When the plant is disturbed, a cloud of tiny white insects may emerge from the foliage.
While not the primary cause of stickiness, sooty mold is a fungus that grows on the honeydew left by sap-sucking insects. It creates a black, crusty appearance on the Abutilon leaves that can block photosynthesis.
Your plant might also be experiencing one of these issues: