Why does your Zantedeschia Captain Palermo have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Zantedeschia species are highly susceptible to root rot if the growing medium remains saturated. Excessive moisture prevents oxygen from reaching the rhizome, leading to chlorosis (yellowing) of the foliage as the roots begin to decay.
Calla Lilies require consistent nutrient availability to maintain their large, lush leaves. A lack of nitrogen prevents the plant from producing sufficient chlorophyll, resulting in a uniform yellowing starting with older leaves.
As tender perennials, 'Captain Palermo' can react to sudden drops in temperature or cold drafts by halting metabolic processes. Cold stress often manifests as yellowing and wilting of the leaf margins.
High humidity combined with poor air circulation can trigger fungal pathogens like Botrytis on the large surface area of Calla Lily leaves. This often begins as yellow patches that eventually turn into brown, necrotic lesions.
Your plant might also be experiencing one of these issues:
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