Why does your Zantedeschia Captain Solo have sudden leaf drop? Diagnose the cause and fix it with our step-by-step guide.
Excessive moisture in the substrate leads to anaerobic conditions, causing Pythium or Phytophthora species to attack the rhizome. This prevents water transport to the foliage, resulting in rapid senescence and leaf drop.
Calla Lilies are sensitive to sudden drops in ambient temperature or cold drafts. A rapid shift toward cooler temperatures can trigger a survival mechanism where the plant sheds leaves to reduce transpiration.
High humidity combined with poor airflow can promote Botrytis cinerea, which causes lesions on the leaves. As the infection spreads, the plant may drop leaves to mitigate the spread of the pathogen.
A significant lack of nitrogen prevents the maintenance of chlorophyll and structural integrity in large leaves. While usually more gradual, extreme deficiency can lead to sudden yellowing and shedding.
Your plant might also be experiencing one of these issues:
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