Why does your Celery Darklet F1 have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlyThe tiny black flies are likely fungus gnat adults, whose larvae feed on organic matter and fine root hairs in the soil. In Celery, heavy infestations can damage the shallow root system essential for moisture uptake, leading to wilting.
While typically slower-moving, certain aphid species can be mistaken for small flies when swarming. They suck sap from the tender celery ribs and leaves, often causing stunting or leaf curling.
The 'flies' may be adult leafminer flies that lay eggs inside the celery leaves. As larvae hatch, they create characteristic serpentine tunnels within the leaf tissue, which can weaken the structural integrity of the stalks.