Why does your Aglaonema nitidum Silver King have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Aglaonema species are highly susceptible to fungal pathogens like Pythium if the substrate remains saturated. Excessive moisture prevents oxygen from reaching the roots, leading to cell death and yellowing leaves starting from the bottom.
A lack of nitrogen prevents the production of chlorophyll, causing older leaves to lose their characteristic silver and green luster and turn uniform yellow. This is common in Aglaonema if the potting medium has become depleted over time.
While Silver King is shade-tolerant, insufficient light prevents efficient photosynthesis, leading to chlorosis. Conversely, direct midday sun can scorch the silver variegation, turning patches yellow or white.
Aglaonemas are tropical plants that thrive in warm temperatures; exposure to temperatures below 60°F (15°C) or sudden cold drafts from air conditioners can cause metabolic disruption and leaf yellowing.
Your plant might also be experiencing one of these issues:
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