Why does your Lilium orientalis Alma Ata 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 lily potting soil. They feed on decaying plant material and can damage the delicate root system of 'Alma Ata' lilies by feeding on fine feeder roots.
Excessive moisture in the rhizome container creates an ideal breeding ground for gnats and can lead to Bulb Rot. Oriental lilies require well-draining soil, as stagnant water attracts pests and promotes fungal pathogens.
Old, spent blooms or decomposing mulch around the base of the 'Alma Ata' lily provide a nutrient source for fly larvae. As organic material breaks down in the pot, it attracts various small dipterans.
Your plant might also be experiencing one of these issues:
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