Gathers the cultivated forms of the mustard family that are grown for their heads, flower buds, stems and leaves. It includes cabbage, Napa cabbage, bok choy, broccoli, cauliflower, Brussels sprout, kale, collard greens, kohlrabi and gai lan. Within the Vegetables and Vegetable Products subcategory it sits beside the groups Alliums, Roots, Tubers and Corms, Leafy Greens and Salad Vegetables, Fruiting Vegetables and Gourds, Stalks, Shoots and Mushrooms, and each entry is placed in the one group whose description fits it best.