Why does your Philodendron x Wendimbe Imperial Red have sticky leaves? Diagnose the cause and fix it with our step-by-step guide.
Scale insects attach to the underside of the leaves and pierce the plant tissue to suck sap, excreting a sugary substance known as honeydew. This residue creates a characteristic sticky film on the leaf surfaces.
Aphids are soft-bodied insects that congregate on new growth and tender stems of Philodendrons to feed. As they consume sap, they excrete honeydew which coats the Imperial Red's foliage.
Mealybugs produce honeydew as they feed on the plant's vascular system, leading to stickiness. They are often accompanied by a white, cottony appearance on the leaf axils.
While not the primary cause of stickiness, sooty mold is a black fungus that grows specifically on the honeydew left behind by pests. It can make the dark red leaves of your Imperial Red look covered in dark soot.
Your plant might also be experiencing one of these issues: