Why does your Lilium hybrid Mestre have white powder? Diagnose the cause and fix it with our step-by-step guide.
This fungal disease is characterized by white, flour-like spots on the leaves and stems of lilies. It thrives in high humidity and poor air circulation around the Mestre Lily foliage.
Small, white, waxy insect colonies can settle on the stems and undersides of leaves. These pests suck sap from the lily, often leaving a sticky residue called honeydew.
These small insects are covered in a white, cottony wax that can look like powder from a distance. They typically congregate in the crevices of the lily's leaf axils.
While usually associated with gray mold, early stages of Botrytis on lily petals or leaves can sometimes present as pale, dusty-looking lesions.
Your plant might also be experiencing one of these issues:
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