Why does your Viola cornuta Purple Rose White Face have fine webbing? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlySpider mites thrive in the warm, dry conditions often experienced by Viola cornuta. They pierce the cell walls of the violet leaves to suck out nutrients, leaving behind fine silk webbing as they create protective colonies.
In high humidity or stagnant air environments, these mites can rapidly colonize violets. The fine webbing is a primary sign of an established colony feeding on the undersides of the foliage.
While not a direct cause, drought stress in pansies and violets weakens their natural defenses and makes leaf sap more concentrated, which attracts spider mites to build webs.
Your plant might also be experiencing one of these issues: