Why does your Onion Superon 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 thrive in the moist organic matter of onion bulb media. The larvae feed on fine root hairs, which can directly impair the nutrient uptake of your Superon F1 bulbs.
Certain species of gall midges target Allium species, laying eggs that hatch into larvae which can cause swelling or distortions in the developing onion bulb.
While not a fly itself, excessive soil moisture creates the perfect breeding ground for various dipteran species. This environment also promotes root rot in Superon F1, making the plant more susceptible to pests.
Your plant might also be experiencing one of these issues:
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