Why does your Phalaenopsis Beaumont have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlyThe presence of tiny black flies in Phalaenopsis is most commonly due to fungus gnat larvae feeding on organic matter and decaying roots in overly moist sphagnum moss or bark. The adults emerge to lay eggs in the top layer of the substrate.
While not the flies themselves, persistent high moisture levels in the Phalaenopsis media create the perfect breeding ground for pests. This condition often leads to anaerobic conditions that attract scavenging insects.
If there is decomposing organic matter or old, dead orchid leaves in the pot, various small flies may be attracted to the decaying biomass rather than the living tissue of the Phalaenopsis itself.
Your plant might also be experiencing one of these issues:
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