Leek moth

Symptoms
Leek moth infestation include mining and pinhole damage on inner leaves. Plants may look unsightly and distorted because of this damage and rotting may occur.

Spot them
Adult moths emerge in the spring and can lay up to 100 eggs on the lower surfaces of leaves. Hatched larvae mine through the leaves as they progress inward toward the heart of the plant, occasionally attacking the bulb and the stem.