I always let one of my Vegetable Beds go to flower in the Spring. The Carrots, Parsley, Beets, Cilantro, Onions, and other cruciferous vegetables will grow all Winter here, and when the Spring comes they will "Bolt" and go to flower and make seeds.
This is a Carrot Flower, something most people have ever seen. Once these flowers are mature and producing seeds I'll harvest the plant, take the root to eat, and hang the stem on the fence to dehydrate.
Onions produce a fireworks burst like flower.
This is a Beet "Flower", not so much like a flower.
Cilantro produces bizillions of tiny white flowers.
This Sage produces purple flowers, but these are done flowering for the year.