Why does your Rhododendron impeditum have fine webbing? Diagnose the cause and fix it with our step-by-step guide.
Spider mites are the most common cause of fine webbing on dwarf rhododendrons, especially in warm, dry conditions. They pierce the leaf cells to feed, causing stippling (tiny white dots) and creating silk webs to protect their colonies.
In many regions, this specific mite species thrives on Rhododendron impeditum during summer droughts. The webbing becomes more dense as the infestation progresses, often accompanied by a yellowing or bronzing of the foliage.
While less common than spider mites, other mite species can produce silk structures in high humidity or specific microclimates. This often presents as more distorted or puckered leaf growth alongside the webbing.
Your plant might also be experiencing one of these issues:
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