Hardy annuals can be sown outside in early spring where they are to flower. Alternatively sow indoors, and transplant, you'll get earlier blooms this way.
Agrostemma githago
Corn cockle
Annual
Hardy
Pink
Mid-green
60cm to 100cm x 30cm (2ft to3ft x 1ft)
Grows best in poor soil and likes a sunny spot. It has lance-shaped leaves with trumpet-shaped flowers 8cm (3in) across. Note: the seeds are poisonous.