Why does your Anthurium andraeanum Almera have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
The tiny black flies are likely the adult stage of fungus gnats, which thrive in the consistently moist organic matter used for Anthurium potting mixes. Their larvae live in the soil and feed on decaying organic material and fine root hairs, potentially damaging the plant's nutrient uptake.
High soil moisture levels create an ideal breeding ground for pests like fungus gnats. In Anthuriums, excessive water leads to anaerobic conditions in the substrate, which attracts flies looking for decaying organic matter.
If the potting medium contains too much peat moss or compost that has begun to break down, it provides a nutrient-rich environment for fly larvae. As the substrate decomposes, it releases gases and moisture levels that attract adult flies.
Your plant might also be experiencing one of these issues:
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