The cornflower is the national flower of Germany. It is also called the knapweed. It belongs to the genus ‘Centaurea’.
The upper part of the plant has many stems and it produces many flowers. The flowers of the plant are striking because of their blue color.
At present, the flowers are also available in white, pink, and red. It is an annual plant, which means that the plant germinates flowers and dies in one year.