Dill also happens to be another attraction for beneficial insects. As such, dill helps to repel cabbage moths, worms, and loopers, anything with an appetite to devour many a brassica.
Bees and butterflies are both attracted to hyssop flowers. As an insect repellent, hyssop is repelling cabbage butterflies and cabbage moth larvae, even proclaim that hyssop repels slugs that feed on lettuce and cabbage.
Besides adding a touch of vibrant color to the garden, marigolds are great at suppressing nematodes that attack the roots of plants. They will repel cabbage worms for all members of the cabbage family.
Nasturtiums can deter insects of the cabbage family.
Rosemary repels cabbage loopers from all cruciferous vegetables, by smell alone.
Tansy being beneficial for your cabbages. It will also help beans, corn, cucumbers, and squash.
Thyme works successfully to deter cabbage worms.
Yarrow attracts loads of beneficial insects and can be found buzzing under the fullest sun of the day. The flowers even entice parasitic wasps who, in turn, lay their eggs in cabbage butterfly caterpillars.