Plants appear sickly and stunted and take on a bluish cast.
Infested plants either survive in a sickly condition for some time or they die. With heavy infestation, the roots are riddled and quickly finished off by decay organisms. The infested roots of cabbage, cauliflower, rape, and the fleshy parts of turnips, rutabagas, and radishes have brownish grooves over their surface or winding brown tunnels through the flesh, with the smaller roots eaten off completely. The CM attacks the roots of plants in the mustard or cruiciferae families such as cabbage, cauliflower, broccoli, Brussels sprouts, radish, turnip, rutabaga, mustard, and mustard-like weeds. Occasionally, other crops, such as beets, cress, celery, and other vegetables, may be slightly damaged.