Why does your Hibiscus rosa sinensis Cheerleader Light Red 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 moist organic matter of Hibiscus potting soil. Their larvae feed on decaying organic material and can damage delicate feeder roots of the Cheerleader hibiscus.
Frequent overwatering or lack of drainage in Hibiscus pots creates the perfect breeding ground for moisture-loving pests. Excessive humidity at the soil surface encourages adult flies to lay eggs in the top layer of substrate.
While not the cause of the flies, a lack of nitrogen or magnesium can weaken the Hibiscus's immune system, making it more susceptible to pest infestations. Weakened plant tissues release chemical signals that attract various flying insects.
Your plant might also be experiencing one of these issues:
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