Bachelor's Button
Bachelor's Button, a hardy, annual garden flower. The bachelor's button is known by a number of other names, including cornflower, bluebottle, and bluebonnet. It is usually blue, but also may be pink, purple, red, or white. It is native to southern Europe and is cultivated throughout the world. The bachelor's button may reach 2 feet (76 cm) in height and is grown from seeds.
Bachelor's button is Centaurea cyanus of the family Compositae.