Why does your Onion Fire King F1 have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
The larvae of these flies live in the soil and feed on organic matter and fine root hairs of the onion. High moisture levels in the onion bed provide the ideal breeding ground for their life cycle.
While often associated with larger larvae, certain small flies target the succulent tissue and bulb development of Alliums. They can cause physiological stress to the Fire King variety during the bulbing stage.
If there is decomposing organic mulch around the Fire King onions, these flies may be attracted to the fermenting sugars. They do not feed on the onion itself but indicate an environment prone to fungal growth.
Your plant might also be experiencing one of these issues:
English
Italiano
