Centaurea cyanus, commonly known as cornflower or bachelor's button, is an annual flowering plant in the family Asteraceae, native to Europe.
It has been present in the British Isles as an archaeophyte (ancient introduction) since the Iron Age.
The blue cornflower has been the national flower of Estonia since 1918 and symbolizes daily bread to Estonians.
The blue cornflower was one of the national symbols of Germany.
This is partly due to the story that when Queen “Louise of Prussia” was fleeing Berlin and pursued by Napoleon's forces, she hid her children in a field of cornflowers and kept them quiet by weaving wreaths for them from the flowers.
In France the “bleuet de France” is the symbol of the 11 November 1918 armistice and, as such, a common symbol for veterans (especially the now defunct poilus of World War I), similar to the "Remembrance poppies" worn in the United Kingdom and in Canada
Totally edible, blueberry flowers are used in cooking, mainly in salads and desserts.
They are found in some recipes of mousses, fruit salads, cookies and other cakes, for their decorative aspect and their light sweet and flowery flavor. The beautiful blue colour of its petals can decorate summer salads, cakes, ice cream and all dishes. Cornflowers have been used historically for their blue pigment.
Cornflowers are often used as an ingredient in some tea blends and herbal teas