Why does your Lilium oriental Willeke Alberti have fine webbing? Diagnose the cause and fix it with our step-by-step guide.
The fine webbing is a classic sign of spider mite infestation, where the mites create silk webs to protect themselves and their eggs. These pests pierce the lily's leaf cells to suck out nutrients, causing stippling or chlorosis on the foliage.
Certain species of eriophyid mites produce extremely fine, nearly invisible webbing that can drape over lily buds and leaves. While less destructive than two-spotted mites, they thrive in the same warm, dry conditions.
Extreme dryness can cause the plant's physiological processes to slow, making it more susceptible to secondary pest outbreaks. While lack of humidity doesn't create webbing itself, it creates the ideal microclimate for spider mites to multiply rapidly on Oriental Lilies.
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