Why does your Adiantum raddianum have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlyThe larvae of fungus gnats live in the top layer of moist soil and feed on organic matter and decaying plant roots. Frequent overwatering of your Adiantum raddianum provides the perfect humid environment for their life cycle.
The presence of flies is often a symptom of decomposing organic matter in the substrate. If the soil for your Adiantum raddianum is not well-aerated, it creates a breeding ground for fly larvae.
While less common, certain beetles can emerge from the soil looking like small black flies. They may feed on the delicate rhizomes of the Maidenhair fern, causing frond decline.
Your plant might also be experiencing one of these issues:
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