Why does your Portulaca grandiflora have white cottony spots? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlyThese small insects secrete a white, waxy, cotton-like substance to protect themselves as they feed on the sap of Portulaca stems and buds. They tend to cluster in crevices or where leaves meet the succulent stem.
This fungal disease manifests as a white, flour-like coating on the leaf surfaces, often triggered by high humidity or poor air circulation around the dense Portulaca foliage. Unlike insects, this growth looks like a fine dust that covers large areas of the plant.
While less common in succulents, certain fungal pathogens can produce white mycelium that looks like cotton around the base or stems of the plant. This is often accompanied by rapid stem softening and wilting.
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