Why does your Hyacinthus orientalis Blue Pearl 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 breed in the moist organic matter of the potting soil. Their larvae feed on decaying plant roots and fungal mycelium, which can indirectly damage the bulb's root system.
High moisture levels in the Hyacinth's substrate create the perfect breeding ground for gnats and increase the risk of Bulb Rot. Constant dampness prevents the bulb from entering necessary dry periods, leading to anaerobic conditions.
If old foliage or dead bulb fragments are left in the pot, they provide a nutrient-rich food source for flies and larvae. This decomposition process also attracts various dipteran species to the Hyacinth container.
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