Why does your Lilium OT Pink App have sudden leaf drop? Diagnose the cause and fix it with our step-by-step guide.
This fungal pathogen thrives in humid conditions and attacks the foliage of Oriental lilies, causing leaves to wilt, develop brown spots, and eventually drop prematurely. It often enters through wounds or during periods of high moisture around the lily blooms.
Overly saturated soil leads to the decay of the lily bulb and root system, cutting off the supply of water to the leaves. When roots cannot breathe, the plant responds by shedding foliage to reduce transpiration.
Oriental lilies are sensitive to sudden heat waves or unseasonable frost. Rapid fluctuations cause the plant to enter a defensive state, shedding leaves to protect the central bulb from environmental shock.
A lack of available nitrogen prevents the lily from maintaining chlorophyll levels, leading to chlorosis and eventual leaf senescence. This is common if the lilies have been planted in exhausted or highly leached soil.
Your plant might also be experiencing one of these issues: