Why does your Mini Rose Roland Garros Amorina 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 found in miniature rose potting soil. They feed on decaying plant material and can damage the delicate root systems of 'Amorina' roses by consuming fine feeder roots.
Miniature roses are highly susceptible to root suffocation if the medium remains saturated. Constant dampness creates the perfect breeding ground for fungus gnat larvae and can lead to secondary issues like Botrytis or root rot.
If the potting mix used for this miniature variety contains high amounts of peat moss or unfinished compost, it provides an abundant food source for fly larvae. This excess organic decay attracts adult flies to lay eggs.
Your plant might also be experiencing one of these issues:
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