Why does your Lilium Competition have fine webbing? Diagnose the cause and fix it with our step-by-step guide.
Spider mites are the most common cause of fine webbing on lilies. They pierce the cell walls of the lily leaves to feed on sap, leaving behind silken webs and causing stippling (small white/yellow spots) on the foliage.
While less prone to large webs than spider mites, certain eriophyid mite species can create microscopic webbing or erineum (eruptive patches) on lily foliage during dry conditions.
In very dry environments, the fine hairs on lily leaves can trap dust and debris, which may visually mimic light webbing. This is often accompanied by curling or crisping of the leaf edges.