Why does your Red Cabbage Pretino 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 organic matter of the soil and feed on fine root hairs, which can weaken young cabbage seedlings. The adult flies are attracted to the moist, nitrogen-rich environment often found in brassica cultivation.
While primarily known for creating trails in leaves, some species of small flies can lay eggs that lead to larvae tunneling through the cabbage tissue. This causes visible damage to the structural integrity of the Red Cabbage Pretino leaves.
Though they are technically insects rather than flies, small dark-colored aphids can be mistaken for tiny black flies at a distance. They cluster on the tender growth of brassicas and excrete honeydew which attracts other small flying insects.
Your plant might also be experiencing one of these issues:
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