The cornflower, Centaurea cyanus, belongs to the Asteraceae family, and the Centaurea genus comprises 770 known species. Native to the Near East, the cornflower is an annual plant, or biennial depending on the cultivation method, and a messicolous plant, i.e. a harvest inhabitant. Messicolous plants are adapted to survive shallow tillage, and the modernization of cultivation practices has led to the rarefaction of these plants. In addition to their biodiversity value, cornflowers have edible, melliferous and medicinal flowers. They are traditionally used for their diuretic properties and to treat digestive symptoms.