Why does your Mini Rose Prairie Ovation 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 thrive in the moist organic matter of rose potting soil. Their larvae feed on decomposing organic material and can damage the delicate feeder roots of miniature roses.
Frequent watering or poor drainage in miniature rose containers creates a perfect breeding ground for fungus gnat larvae. Constant wetness also stresses the plant, making it more susceptible to root decay.
Decomposing fallen petals or old leaves sitting on the soil surface provide a nutrient-rich environment for flies to lay eggs. Miniature roses in dense foliage can trap moisture and organic debris easily.
Your plant might also be experiencing one of these issues:
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