Cornflower (Centaurea cyanus) annual wildflower

Ref: cornflower

A pretty bright blue solitary flower, in bloom from June to September and growing from30-120 cm in height. Cornflower is also known as bachelor's buttons, bluebottle, blue bonnets, brooms and brushes, pin-cushion and witch bells. Dried cornflowers are sometimes an ingredient of Earl Grey tea. Cornflower was once used as a dye in champagne wine and is still used in herbal medicine in France today, where the petals are prescribed as a poultice.