Why does your Zantedeschia Captain Marrero have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Zantedeschia cultivars are highly susceptible to fungal pathogens like Phytophthora if the soil remains saturated. Excessive moisture suffocates the rhizome, leading to chlorosis (yellowing) of the leaves as the root system fails.
As heavy feeders, Calla Lilies require consistent nitrogen for chlorophyll production. A lack of available nitrogen in the potting medium will cause older leaves to turn uniformly yellow before progressing to the new growth.
Zantedeschia 'Captain Marrero' prefers stable, warm temperatures. Exposure to drafts or sudden drops in temperature can cause the metabolic processes to stall, resulting in yellowing foliage.
While they enjoy bright light, extreme direct afternoon sun can scorch the leaves of this cultivar. Conversely, insufficient light prevents efficient photosynthesis, leading to pale, yellowish leaf tissue.
Your plant might also be experiencing one of these issues:
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