The following popular vegetables are actually flowers: broccoli, cauliflower, artichokes, and Brussels sprouts.
Broccoli is a type of cabbage and is a member of the Brassica family. It is a cool-season crop and produces edible flower heads. Cauliflower is also a type of cabbage and is also a cool-season crop. It produces white, edible flower heads. Artichokes are a type of thistle and produce edible flower buds. Brussels sprouts are a type of cabbage and produce edible flower buds.