Brussels Sprouts are one of the more unusual of the brassica family. Unlike the cabbage or broccoli with one central large bud or blossom, the Brussels Sprout grows on a stalk. This stalk can grow to up to three feet in height. The edible parts of the plant are clusters of swollen buds or sprouts. They are about 2.5 cm (about 1 in) in diameter, growing along the stem at the junctions of the leaves.