Why does your Hosta undulata Albo-marginata have fine webbing? Diagnose the cause and fix it with our step-by-step guide.
Spider mites thrive in the warm, dry conditions that Hosta prefer during summer. They pierce the cell walls of the leaves to suck sap, leaving behind fine silk webbing and characteristic stippling (tiny white dots) on the variegated margins.
Often occurring alongside two-spotted mites, these pests create dense webbing that can eventually cover entire leaf clusters, causing the Hosta's wavy edges to turn bronze or crispy.
In very dense Hosta plantings with poor airflow, fine fungal hyphae can sometimes be mistaken for webbing, though this usually presents as a fuzzy coating rather than structural silk.
Your plant might also be experiencing one of these issues:
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