Why does your Lilium oriental Corvara have fine webbing? Diagnose the cause and fix it with our step-by-step guide.
Spider mites are the primary cause of fine silken webbing on Oriental lilies, especially in low-humidity environments. They feed by piercing lily cells and sucking out the contents, leading to stippling and eventual leaf chlorosis.
While less common for large webbing, these microscopic mites can cause structural damage and fine silk production in Lilium species. They often thrive in the humid microclimates found near the base of lily foliage.
While thrips primarily cause silvering/scarring rather than webs, a high-density population can sometimes lead to secondary silk production by predatory mites or confusion with mite webbing. They thrive in the warm conditions preferred by 'Corvara' lilies.
Your plant might also be experiencing one of these issues:
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