High Quality Content by WIKIPEDIA articles! Cabbage (Brassica oleracea or variants) is a leafy green biennial, grown as an annual vegetable for its densely-leaved heads. Closely related to other cole crops such as broccoli, cauliflower and brussels sprouts, it descends from B. oleracea var. oleracea, a wild field cabbage. Cabbage heads generally range from 1 to 8 pounds (0.45 to 3.6 kg), and can be green, purple and white. Smooth-leafed firm-headed green cabbages are the most common, with smooth-leafed red and crinkle-leafed savoy cabbages of both colors seen more rarely.