Why does your Zantedeschia Captain Romance 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 Phytophthora or Pythium species to attack the tuberous roots. This prevents water transport to the foliage, resulting in rapid senescence and leaf drop.
Zantedeschia cultivars are sensitive to sudden temperature drops. Cold soil or drafts can trigger a defensive dormancy response, causing the plant to shed leaves to conserve energy.
A lack of available nitrogen prevents the plant from maintaining chlorophyll levels in its large leaves. As the plant prioritizes the tuber, it will shed older foliage to relocate nutrients.
High humidity combined with poor air circulation can cause Botrytis cinerea to infect the leaf tissue. As the lesions expand, the plant may shed heavily damaged leaves prematurely.
Your plant might also be experiencing one of these issues:
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