Why does your Phalaenopsis Alghero have fine webbing? Diagnose the cause and fix it with our step-by-step guide.
The fine webbing is a classic sign of spider mite infestations, which thrive in the warm, dry conditions often found with Phalaenopsis orchids. These microscopic pests pierce plant cells to suck out nutrients, leading to stippling and eventual leaf yellowing.
While not producing actual silk, extreme lack of humidity can cause delicate plant fibers or old organic debris in the orchid bark to become brittle and appear as fine, thread-like structures. This often accompanies stressed leaves that feel papery.
In some cases, what looks like webbing can be the movement of predatory mites (like Phytoseiulus) used in biological controls. While they don't create webs, their presence is often mistaken for a pest outbreak during intense inspections.
Your plant might also be experiencing one of these issues:
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