Why does your Zantedeschia Captain Kelso have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
The presence of tiny black flies in the soil is almost certainly fungus gnats, whose larvae feed on organic matter and decaying roots. They thrive in the moist, nutrient-rich soil typically used for Zantedeschia cultivation.
Frequent moisture in the Zantedeschia pot creates an ideal breeding ground for fungus gnat larvae. Excessive water also stresses the rhizome, producing the organic decay that attracts these flies.
Dead leaves or decaying mulch around the base of the yellow Calla Lily provide a perfect substrate for fly larvae to develop. If old foliage is not removed, it serves as a primary food source.
Your plant might also be experiencing one of these issues:
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