Do not add excess manure to the soil, as this makes it especially attractive for the adult cabbage maggot flies to lay their eggs. Another preventative method is to plant strong, healthy seedlings ...
and cabbage maggot flies may feast on the leaves, weakening the plant as it grows. Growing broccoli companion plants can provide natural pest control by staving off unwanted critters and insects.
Petunias will be used as trap plants in cabbage to determine their effect on the incidence of cabbage maggot and Jimsonweed will be planted in a potato crop to determine its effect on Colorado potato ...