Why does your Red Zantedeschia aethiopica have sudden leaf drop? Diagnose the cause and fix it with our step-by-step guide.
Calla Lilies are sensitive to waterlogged soil; excessive moisture promotes Phytophthora or Pythium fungi, which destroy the rhizome and root system. As roots decay, the plant can no longer support foliage, leading to rapid leaf senescence and drop.
Red Zantedeschia aethiopica is a tropical-origin plant that thrives in warmth. A sudden drop in ambient temperature or exposure to frost can cause the plant to enter a survival mode, triggering rapid leaf abscission.
High humidity combined with poor air circulation can lead to Botrytis cinerea, which causes lesions on leaves that eventually weaken the petiole. As the infection spreads, the plant may shed affected leaves to prevent further spread.
A severe lack of nitrogen prevents the plant from maintaining chlorophyll levels and structural integrity in large leaves. This deficiency often manifests as yellowing followed by the shedding of older, lower leaves.
Your plant might also be experiencing one of these issues:
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