Why does your Chinese Cabbage Preduro F1 have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlyThe tiny black flies are likely adult fungus gnats, whose larvae live in the moist soil of your cabbage seedlings and feed on organic matter and delicate root hairs. High moisture levels in the potting medium promote both the fungi they feed on and their reproduction.
While typically seen as larvae within leaves, the adults are tiny flies that lay eggs in the cabbage tissue. If you see serpentine tunnels inside the leaves of your Preduro F1 alongside the flies, this is a likely culprit.
If there is decomposing organic matter or overripe vegetable debris near your Chinese Cabbage, fruit flies may be attracted to the area. While they don't directly attack the cabbage, their presence indicates an environment that could lead to secondary fungal issues.
Your plant might also be experiencing one of these issues:
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