Why does your Lilium orientalis Ofuna have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
The tiny black flies are likely fungus gnat adults, which thrive in the moist, organic-rich soil preferred by Oriental Lilies. Their larvae live in the top layer of soil and feed on decaying organic matter and occasionally fine root hairs.
Frequent watering or poor drainage in the lily pot creates the perfect breeding ground for fungus gnats. High humidity and wet topsoil surfaces are the primary drivers for their lifecycle completion.
Large amounts of uncomposted peat or mulch on the surface of the Lily pot provide food and hiding spots for fly larvae. These flies seek out nitrogen-rich, decaying material to lay their eggs.
Your plant might also be experiencing one of these issues:
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