Why does your Sinningia speciosa Empress Lavender Bicolour 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 required by Sinningia speciosa. They feed on decaying organic matter and can damage developing root hairs of the tuber.
Constant dampness in the potting medium creates the perfect breeding ground for fungus gnat larvae. Sinningia species are prone to tuber rot if the soil does not have adequate drying intervals.
Using heavy amounts of compost or unrefined organic fertilizers in Gloxinia pots can attract gnats by providing an abundant food source for larvae. This excess organic decay also increases the risk of fungal pathogens in the soil.
Your plant might also be experiencing one of these issues:
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