Why does your Mini Rose Rosa Terrazza Nova 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, which breed in the moist organic matter of the rose's potting medium. Their larvae feed on decaying plant roots and organic material, often thriving in the consistently damp soil required by miniature roses.
Miniature roses like 'Terrazza Nova' require well-draining soil, but overwatering creates a perfect breeding ground for flies. Constant moisture prevents the top layer of soil from drying out, signaling an environment ripe for insect larvae.
Decomposing leaves or uncomposted potting mix in the rose pot provide the necessary food source for fly larvae. As these organic components break down, they release signals that attract adult flies to lay eggs.
Your plant might also be experiencing one of these issues:
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