Here are tips on how to identify and get rid of cabbage root maggots.
What Are Cabbage Root Maggots?
Cabbage root maggots affect cabbage, cauliflower, broccoli, and brussels sprouts. (This group of vegetables is also known as ‘cole crops.’) Different types of root maggots also occur that affect carrots, onions, and other veggie crops. Because cole crops are cool-season vegetables, cabbage root maggots are much more prominent in Northern zones of the US. They are difficult to control, because they hatch and feed underneath the soil, so you may only know they are there when you notice stunted growth or wilting foliage.