Good enough to eat
Sweetcorn If you have sown sweetcorn in pots and live in a mild area, you should be able to start hardening them off in warm weather, but don’t plant them out until all danger of frost has passed.
Sweetcorn is wind-pollinated and should be planted in blocks of at least 12 plants to increase the chance of pollen landing on female flowers which will result in an increase in the yield.
Space out the plants around 40cm (16in) apart each way.
In colder areas, sow them in pots in a propagator four weeks before the last expected frost date.