Why does your Spathiphyllum Green Giant have white powder? Diagnose the cause and fix it with our step-by-step guide.
A fungal disease caused by high humidity and poor air circulation around the large leaves of the Spathiphyllum. It manifests as a white, flour-like coating on the leaf surfaces.
These sap-sucking insects secrete a white, waxy substance that looks like powder or cotton. They tend to cluster in the leaf axils and where the petiole meets the stem of the Peace Lily.
Calcium and magnesium from tap water can precipitate on the surface of the leaves as water evaporates. This often appears as a white, crusty residue rather than a biological growth.
While mites themselves are tiny, a heavy infestation can produce fine, white silken webbing that looks like a dusty coating over the entire plant.
Your plant might also be experiencing one of these issues: