Why does your Leek Mako Flash F1 have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
The tiny black flies are likely fungus gnats, whose larvae live in the moist organic matter around leek roots and feed on decaying plant material or root fine hairs. High soil moisture levels required for leeks provide an ideal breeding ground for these pests.
Certain small dark beetles can be mistaken for flies; they inhabit the soil and may attack the tender base of young Leek Mako Flash F1 seedlings. While less common than gnats, their presence often correlates with high humidity in the planting bed.
If the leek crop is experiencing early signs of rot or fermentation due to overwatering, fruit flies may be attracted to the decaying organic matter at the soil surface. This is an indirect symptom of poor drainage rather than a direct attack on the leek tissue.
Your plant might also be experiencing one of these issues:
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