The Cabbage Moth is a variable moth, so it can be difficult to identify in the garden or allotment. Generally, wing colouring is mostly greyish-brown, providing perfect camouflage when resting on tree bark and the soil.
The severity of damage can vary year to year. They favour Brassicas but they've also been found on Lettuce, Chicory, Spinach, Tobacco, Beets, Onion and Beans.
Caterpillars will begin to feed on the outermost leaves of the vegetable, leaving irregular holes and tears in their paths. They then move on to boring within the hearts of vegetables.