Why does your Red Zantedeschia aethiopica have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Calla Lilies are prone to fungal pathogens like Phytophthora if the rhizome sits in waterlogged soil. Excessive moisture suffocates the roots, leading to chlorosis (yellowing) of the foliage as nutrient transport is disrupted.
Red Zantedeschia requires consistent fertilization during its growing season. A lack of nitrogen or magnesium prevents the production of chlorophyll, causing older leaves to turn pale yellow before new growth appears.
Calla Lilies are tropical perennials that are sensitive to temperatures below 50°F (10°C). Sudden drops in temperature can cause the plant's metabolism to slow down, resulting in yellowing and drooping leaves.
While they can tolerate partial shade, inadequate light prevents the plant from performing photosynthesis efficiently. This energy deficit often manifests as thinning, pale yellow foliage.
Your plant might also be experiencing one of these issues:
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