Sow indoors in pots or large modules from April. Sow two seeds in each pot and remove the less vigourous one. Plant out at final spacing after the last frost, mid-May as a rule of thumb. Alternatively direct sow in May in final growing position; place 2-3 seeds in pre-dibbed 3cm deep holes at the required spacing and thin to one plant per station. Early crops benefit from fleece to protect them from cold.
Corn was probably domesticated from its wild relative teosinte 9,000 years ago in the lowlands of southwestern Mexico. It had spread across all over the Americas by about 5,000 years ago and was brought to Europe by explorers in the 16oos.