Why does your Sinningia pusilla 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 lay eggs in moist organic matter. Their larvae feed on the delicate root hairs of Sinningia pusilla, potentially causing rhizome decay or stunted growth.
Sinningia pusilla is highly susceptible to rot; constant moisture in the potting medium creates the perfect breeding ground for fungus gnat larvae and promotes fungal pathogens.
If using a heavy, peat-based potting mix, the decomposing organic material provides a nutrient-rich environment for fly larvae to thrive in the tuber's vicinity.
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