Why does your Ocimum basilicum have fine webbing? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlySpider mites thrive in the warm, dry conditions common for basil cultivation. They pierce the leaf cells to feed on sap, leaving behind fine silk webbing and causing stippling (tiny white/yellow dots) on the foliage.
While less aggressive than two-spotted mites, these tiny pests can cause slight webbing and leaf discoloration in basil. They prefer the undersides of leaves and can lead to premature leaf drop if populations grow.
In some cases, very dense basil foliage in high humidity can trap moisture, creating a microclimate that looks like fine silken structures or fungal hyphae. However, this is usually accompanied by gray mold (Botrytis) rather than true webbing.
Your plant might also be experiencing one of these issues:
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