Why does your Malus spectabilis have white powder? Diagnose the cause and fix it with our step-by-step guide.
This is the most common cause of white, flour-like patches on Malus spectabilis leaves and buds. The fungus thrives in high humidity and moderate temperatures, spreading easily through wind.
Small, white, waxy insects that cluster on stems and leaf undersides of crabapple species. They secrete a powdery white wax to protect themselves from predators and desiccation.
While primarily characterized by silvered patches on bark, early stages or related fungal stresses can cause leaf discoloration that appears as a pale, powdery residue.
English
Italiano
