Why does your Hedera hibernica have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
The 'tiny black flies' are likely adult fungus gnats, which thrive in the moist organic matter found in English Ivy pots. Their larvae live in the soil and feed on decaying organic material and fine root hairs, potentially causing root damage.
English Ivy prefers well-draining soil; constant moisture creates an ideal breeding ground for fungus gnat larvae. Excess water also depletes oxygen in the substrate, making the roots more susceptible to secondary fungal infections.
While less likely to be mistaken for 'flies,' certain small, dark-colored aphids can move around the stems of English Ivy. They congregate on new growth and can cause leaves to curl or become sticky with honeydew.
Your plant might also be experiencing one of these issues:
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