Early Extra Sweet sweetcorn is, as the name suggest, is an early sweetcorn; can be ready in 68 days after emergence. The cobs are about 20 cm long; excellent, sweet flavour. Sow the Early Extra Sweet sweetcorn seeds indoors in early spring or outdoors in May until early June, 6-8 seeds per square metre, 2-3cm deep. Sow every fortnight to extend production. Sow the seeds in small pots, seedcells. Transplant the sweetcorn seedlings outside when about 20 cm tall and all risk of frost has passed in your area. Sweetcorn plants need a rich, well drained soil. Keep watering in hot, dry spells, especially when flowering.