Why does your Lilium orientalis Alma Ata have sticky leaves? Diagnose the cause and fix it with our step-by-step guide.
Aphids are common pests for Oriental lilies; they pierce the plant tissue to suck sap, excreting a sugary substance known as honeydew which creates the sticky residue on leaves.
Scale insects attach themselves to lily stems and leaves, feeding on phloem sap and producing honeydew that coats the foliage in a sticky film.
Adult whiteflies reside on the undersides of lily leaves and excrete honeydew as they feed, often leaving a sticky coating accompanied by tiny white flying insects.
These sap-sucking pests produce honeydew and are often accompanied by a white, cottony waxy coating on the plant's nodes or leaf bases.
Your plant might also be experiencing one of these issues: