Why does your Rosa Terrazza Pretty 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 of miniature rose potting soil. They feed on decaying plant material and can damage the delicate root systems of 'Terrazza Pretty' by consuming fine feeder roots.
Miniature roses like 'Terrazza Pretty' require well-draining soil, but constant moisture creates the perfect breeding ground for fungus gnats. This environment also increases the risk of fungal pathogens like Botrytis affecting the rosebuds.
If using a heavy compost-based potting mix, the decomposition of organic nutrients can attract flies seeking breeding sites. As the organic matter breaks down, it provides both food and habitat for the adult flies.
Your plant might also be experiencing one of these issues:
English
Italiano
