Why does your Lilium LA Hybrid White Heaven have fine webbing? Diagnose the cause and fix it with our step-by-step guide.
The fine webbing is a hallmark sign of spider mites, which thrive in the warm, dry conditions often experienced by Lilium LA hybrids. These pests pierce individual lily cells to suck out fluids, leading to stippling and eventual leaf senescence.
While thrips primarily cause silvering and scarring on lily petals and leaves, their movement and feeding can sometimes trigger secondary fungal growth or localized silk-like excretions in high moisture environments.
In high humidity or late-season heat, spider mite populations can explode, creating dense silk webs that encase lily buds and foliage. This webbing acts as a protective microhabitat for the mites to reproduce rapidly.