Why does your Platycerium superbum have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlyThe presence of tiny black flies in a Staghorn fern is most often due to fungus gnats, whose larvae thrive in the damp, organic substrate of the moss or sphagnum used in the mounting medium. They feed on decaying organic matter and can damage the delicate root system of the Platycerium if left unchecked.
Staghorn ferns require high humidity but their mounting medium must not remain waterlogged. Constant moisture creates an ideal breeding ground for gnat larvae and can lead to secondary fungal issues in the base of the shield fronds.
If using a heavy compost or old sphagnum, the breakdown of organic material releases gases and nutrients that attract various dipteran insects. As the substrate ages, it becomes more prone to hosting insect life cycles.
Your plant might also be experiencing one of these issues:
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