Why does your Lilium orientalis Cherbourg have sudden leaf drop? Diagnose the cause and fix it with our step-by-step guide.
This fungal pathogen thrives in the humid conditions often preferred by Oriental lilies. It causes rapid senescence and leaf drop, especially if moisture remains on the foliage overnight.
Excessive moisture at the base of the bulb causes decay that disrupts the plant's vascular system. As the bulb fails, the plant can no longer support foliage, leading to sudden shedding.
Oriental lilies are sensitive to extreme temperature shifts. A sudden heatwave or an unseasonal frost can trigger a survival mechanism where the plant sheds leaves to protect the bulb.
A sudden lack of mobile nutrients prevents the plant from maintaining leaf tissue. In 'Cherbourg', this often manifests as rapid yellowing followed by leaf abscission.
Your plant might also be experiencing one of these issues:
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