Why does your Mini Rose Spinnaker Amorina have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
The tiny black flies are likely the adult stage of fungus gnats, which breed in the moist organic matter of rose potting soil. Their larvae feed on organic material and can damage the fine feeder roots of miniature roses, leading to reduced vigor.
Excessive moisture in the miniature rose pot creates the perfect breeding ground for fungus gnat larvae. Miniature roses have shallow root systems that are highly susceptible to rot when soil remains saturated for too long.
Some species of small flies are attracted to the tender, new growth of miniature roses to lay eggs. While less common than fungus gnats, their presence often coincides with high humidity levels around the plant.
Your plant might also be experiencing one of these issues:
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