Why does your Capsicum annuum Salsa have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
The most likely culprit is fungus gnats, whose larvae live in the top layer of soil and feed on organic matter and fungal mycelium. While adults are just a nuisance, their larvae can damage the fine feeder roots of your pepper plant.
The presence of flies often indicates overly moist soil, which creates a breeding ground for pathogens like Pythium or Rhizoctonia. These fungi can cause the stem of young Capsicum annuum to rot at the soil line.
If your pepper plant has overripe or decaying fruit, small black flies may be attracted to the fermenting sugars. Unlike fungus gnats, these flies are focused on the ripening/rotting fruit rather than the soil.
Your plant might also be experiencing one of these issues:
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