Why does your Sinningia speciosa Empress Red Picotee have white powder? Diagnose the cause and fix it with our step-by-step guide.
This fungal disease is common in Gesneriads when humidity is high but air circulation is poor. It presents as a white, flour-like coating on the leaves and can eventually cause foliage to wilt or die.
Mealybugs are small, soft-bodied insects that secrete a white, waxy substance to protect themselves. They tend to hide in the leaf axils and crevices of the Gloxinia plant.
Excessive buildup of salts from tap water or fertilizers can crystallize on the leaf surface as water evaporates. This often looks like a fine, crusty white dust rather than a fuzzy growth.
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