Why does your Zantedeschia Captain Cheerio have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Zantedeschia species are highly susceptible to fungal pathogens like Phytophthora if the rhizome sits in waterlogged soil. Excessive moisture prevents oxygen from reaching the roots, leading to yellowing foliage as the plant's vascular system fails.
Calla Lilies have high metabolic demands during their growing season. A lack of nitrogen prevents the production of chlorophyll, causing older leaves to turn a pale yellow before eventually withering.
Yellow Calla Lilies are sensitive to sudden drops in temperature. If the plant is exposed to drafts or temperatures below 50°F (10°C), the metabolic process slows down, resulting in chlorosis of the leaf blades.
As the flowering cycle for 'Captain Cheerio' concludes, the plant naturally begins to divert energy back to the rhizome. This process involves the programmed yellowing and death of older foliage to support dormancy.
Your plant might also be experiencing one of these issues:
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