Why does your Cymbidium dayanum have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlyThe tiny black flies are likely fungus gnats, whose larvae thrive in the moist organic matter of Cymbidium potting media. They feed on decaying plant material and can damage fine feeder roots by consuming delicate root hairs.
Persistent dampness in the bark or sphagnum moss substrate creates an ideal breeding ground for flies and increases the risk of secondary fungal infections. Cymbidium dayanum requires a drying cycle between waterings to prevent rot.
Old, decomposing orchid bark or dead leaf sheaths at the base of the pseudobulbs provide a nutrient-rich habitat for fly larvae. This organic decay attracts moisture-loving insects to the plant.
Your plant might also be experiencing one of these issues:
English
Italiano
