Why does your Zantedeschia Captain Reno have sudden leaf drop? Diagnose the cause and fix it with our step-by-step guide.
Overwatering or poor drainage causes the rhizomes of Zantedeschia to decay, leading to a rapid failure in nutrient transport and sudden leaf senescence. This is the most common cause of sudden wilting and dropping leaves in Calla Lilies.
Zantedeschia 'Captain Reno' is sensitive to sudden drops in ambient temperature, particularly below 55°F (13°C). A cold draft or sudden temperature fluctuation can trigger a stress response resulting in rapid leaf shedding.
While Calla Lilies prefer moisture, once the rhizome reaches a critical dehydration point, the plant will shed leaves to conserve moisture for the core bulb. This is often characterized by leaves feeling thin and papery before they drop.
High humidity combined with poor airflow can cause Botrytis cinerea to attack the foliage, leading to necrotic spots that eventually cause entire leaves to detach from the stem.
Your plant might also be experiencing one of these issues:
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