Why does your Zantedeschia Allure have fine webbing? Diagnose the cause and fix it with our step-by-step guide.
The presence of fine webbing is a hallmark sign of spider mite infestations, which thrive in the warm, dry conditions often found with Calla Lilies. These pests pierce the leaf cells to suck out nutrients, leading to stippling and eventual yellowing of the foliage.
A specific subset of spider mites that is highly prevalent in indoor Zantedeschia cultivation. They create silken webs to protect themselves and their eggs, often concentrated on the undersides of the large, fleshy leaves.
While not a primary cause of webbing, extremely dry air can cause leaf edges to shrivel and may exacerbate the visibility of existing mite webs. Calla Lilies prefer consistent humidity; dry conditions stress the plant and make it more susceptible to pests.
Your plant might also be experiencing one of these issues: