Why does your Begonia havana Rose 865 have sticky leaves? Diagnose the cause and fix it with our step-by-step guide.
Aphids are common pests for Begonias that suck sap from tender stems and leaves, excreting a sugary substance called honeydew. This honeydew creates the characteristic sticky residue on the leaf surfaces.
Scale insects attach themselves to Begonia stems and leaf petioles, feeding on phloem sap and producing honeydew. Unlike aphids, these pests look like small, stationary bumps or shells.
Mealybugs are soft-bodied insects that produce honeydew as they feed on Begonia foliage. They often congregate in the crevices between leaves and stems.
Whiteflies feed on the underside of Begonia leaves, secreting honeydew that makes the foliage sticky. A sudden cloud of tiny white insects may emerge when the plant is disturbed.
Your plant might also be experiencing one of these issues: