Why does your Anthurium andraeanum Pandora 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 Anthuriums is fungus gnats, whose larvae live in the top layer of moist organic matter and feed on decaying roots or fungi. Their presence indicates that the potting medium is staying too wet for too long.
While not the flies themselves, constant moisture in the Anthurium's substrate promotes fungal growth which attracts gnats. High humidity combined with soggy peat-based mixes creates the ideal breeding ground for insect larvae.
If the medium for your Pandora Anthurium has become compacted, oxygen cannot reach the roots, leading to anaerobic conditions. This rot provides a nutrient-rich environment for flies to lay eggs.
Your plant might also be experiencing one of these issues:
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