Why does your Echeveria agavoides have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
The most common cause of tiny black flies in succulents is fungus gnats, whose larvae thrive in the moist top layer of organic potting soil. They feed on decaying organic matter and can damage the fine root hairs of Echeveria agavoides.
If the potting mix contains high amounts of peat moss or compost, the decomposing organic matter attracts various dipterans. This is often a side effect of keeping Echeveria soil too damp for too long.
While not the direct cause of the flies, underlying root rot in Echeveria agavoides creates a moist, decaying environment that attracts fungus gnats. The flies are often an indicator that the substrate is too anaerobic.
Your plant might also be experiencing one of these issues:
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