Why does your Pelargonium x peltatum have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
The tiny black flies are likely fungus gnats, whose larvae thrive in the moist organic matter of Pelargonium potting soil. They feed on decaying plant material and can damage delicate root hairs of the Ivy-leaved Pelargonium.
Frequent watering of Pelargonium x peltatum creates the humid, damp environment required for fungus gnat populations to explode. This condition also increases the risk of Pythium root rot in this species.
A potting mix that is too rich in peat moss or compost provides an ideal breeding ground for the larvae of small flying insects. Ivy-leaved Pelargoniums prefer a well-draining, slightly gritty medium to prevent insect buildup.
Your plant might also be experiencing one of these issues:
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