Why does your Kalanchoe blossfeldiana Don Amador have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
The presence of tiny black flies in succulent media is most commonly due to fungus gnats, whose larvae thrive in the moist top layers of soil required by Kalanchoe. The adults emerge to lay eggs in organic matter, and their larvae feed on delicate root hairs of the plant.
Kalanchoe blossfeldiana requires well-draining, gritty soil; excessive moisture creates a perfect breeding ground for flies. High humidity around the soil surface prevents the substrate from drying out, facilitating the life cycle of dipteran pests.
Old, decomposing peat or uncomposted potting mix provides the necessary food source for fly larvae. If dead leaves have fallen into the pot and are rotting against the stem, they act as an incubator for pests.
Your plant might also be experiencing one of these issues:
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