Cornfield annuals would once have been among the most common of common wildflowers. Corn Chamomile, Corn Marigold, Corn Poppy, Cornflower and Corncockle (above) were some of the most prolific of the self-seeding 'arable weeds'. Herbicides largely exterminated them but they can still be found on the margins of modern agriculture and they have enjoyed something of a revival as a deliberately cultivated wildflower.