Why does your Lilium orientalis Marlon have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
This fungal pathogen thrives in the high humidity often surrounding Oriental Lilies. It causes leaves to turn yellow and eventually develop necrotic brown spots, often starting near the leaf edges.
Oriental Lilies require well-draining soil; excessive moisture leads to anaerobic conditions that damage the bulb's root system. As roots decay, they can no longer transport nutrients, causing uniform yellowing of lower leaves.
Lilies are heavy feeders during their growth phase. A lack of available nitrogen in the soil prevents chlorophyll production, manifesting as a pale yellow color starting with older, bottom leaves.
Viral infections can cause chlorosis (yellowing) often accompanied by mottled or mosaic patterns on the foliage. This is typically spread by aphids feeding on the Marlon lily.
Your plant might also be experiencing one of these issues:
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