Cornflowers (Centaurea cyanus) are beautiful annuals with tall stems (up to 1m high) and long-lasting flowers that are great for picking. They’ll grow pretty much anywhere in sun, in poor or fertile soil. A true blue beauty (or purple, pink or lilac), plants are quick growing and prolific flowering. They often grow as wildflowers in Europe – in fact, it was here that they got their common name, found growing wild in corn and grain fields.
Sow seeds in trays, or sow them directly in spring when the soil is warm. Seedlings can also be obtained from garden centres.