Why does your Sinningia speciosa Empress Purple Spotted 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, whose larvae thrive in the moist, organic-rich soil preferred by Sinningia species. They feed on decaying organic matter and can damage the delicate tuberous roots of the Gloxinia.
Sinningia speciosa is highly susceptible to rot; constant moisture in the potting medium creates the perfect breeding ground for fungus gnat larvae. This environment also leads to the degradation of the tuber, which attracts more pests.
If the potting mix contains heavy amounts of peat moss or compost, the breakdown of this organic material provides a food source for the larvae. As the medium decomposes, it releases CO2 and moisture that attract gnats.
Your plant might also be experiencing one of these issues:
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