Centaurea cyanus, also known as cornflower or bachelor's button, is an annual herbaceous plant native to Europe. It belongs to the family Asteraceae, which includes other well-known species such as sunflowers and daisies.
Cornflowers typically grow up to 60 cm tall, with blue, pink, or white flowers that bloom in the summer. The flowers have a distinctive shape, with a central disk surrounded by numerous ray flowers, giving them the appearance of a small, colorful button. The leaves of the plant are narrow and lance-shaped and have a gray-green color.