Why does your Anthurium andraeanum Otazu have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
The larvae of fungus gnats live in the top layer of organic matter and feed on decaying roots and fungi. They thrive in the moist, peat-heavy potting mixes typically used for Anthurium andraeanum.
Frequent moisture leads to anaerobic conditions in the substrate, which promotes fungal growth. This fungal growth provides a primary food source for fungus gnat populations near the Anthurium's roots.
Anthuriums often require high-quality compost or bark-based mixes which, if too decomposed, provide an ideal breeding ground for larvae. The excess nutrients and moisture in decomposing organic matter attract these pests.
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