Why does your Canna Bronze Orange have fine webbing? Diagnose the cause and fix it with our step-by-step guide.
The presence of fine webbing on the undersides of Canna leaves is a classic sign of spider mites, which thrive in hot, dry conditions common to Canna Lily environments. These pests pierce plant cells to suck out sap, leading to stippling and eventual leaf chlorosis.
In many regions, this specific subspecies attacks Canna Lilies aggressively during summer heatwaves. They create dense silk webs that can eventually encompass entire foliage clusters, suffocating the plant's ability to photosynthesize.
While not a direct cause of webbing, extremely low humidity can weaken the Canna's cuticle, making it more susceptible to mite attacks. This physiological stress makes the plant's leaves more attractive to arachnid pests.
Your plant might also be experiencing one of these issues:
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