Why does your Mini Rose Rosa Terrazza Comet 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 found in miniature rose potting soil. Their larvae feed on organic debris and can damage the delicate root systems of 'Rosa Terrazza Comet' by feeding on fine feeder roots.
Frequent watering or poorly draining substrate creates the damp, anaerobic conditions that fungus gnat larvae require to survive. Miniature roses are highly susceptible to root suffocation if the potting medium remains saturated for extended periods.
A potting mix that is too rich in decomposing peat moss or compost provides an ideal breeding ground and food source for black flies. The 'Terrazza' series thrives in well-draining media, but excessive compost can attract pests.
Your plant might also be experiencing one of these issues:
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