Why does your Lilium OT Bombini have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
This fungal pathogen thrives in humid conditions and often causes leaves to turn yellow before developing characteristic brown necrotic spots. It is highly common in Oriental-type lilies like 'OT Bombini' during damp spring weather.
Lilium OT hybrids are heavy feeders; a lack of nitrogen causes older, lower leaves to turn uniformly pale yellow as the plant mobilizes nutrients to new growth. This is often seen in depleted bulb soils or after heavy rainfall leaches nutrients.
Excessive moisture in the rhizome/bulb area leads to oxygen deprivation in the roots, causing systemic yellowing of the foliage. As the bulb begins to decay, the leaves lose their structural integrity and color.
Viral infections in lilies often manifest as chlorosis (yellowing) interspersed with dark green mottling or mosaic patterns on the leaves. This is a systemic issue that cannot be cured once established in the bulb.
Your plant might also be experiencing one of these issues:
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