It's only really worth thinking about sweetcorn if you've got space going begging on your plot. They only produce about two cobs per plant, but they do taste absolutely delicious compared with those you can pick up in the supermarket.
Time from seed to plate: 16 weeks
The deep roots of sweetcorn are ideally suited to rootrainers. Fill sixteen cells with compost and push a kernel into each one, until it's about an inch deep, firm down and water. Place on a bright windowsill.
When your plants are 6in high plant them out. Position them at least 12in apart and plant deep to help them cope with the wind.
Sweetcorn is a thirsty plant, so water in really dry spells.
If your plot is prone to a lot of wind, pile a little more earth up around the stems to give the roots better anchorage.
When the tassels on the end of your cobs start to go brown they're probably ready to harvest. Check by peeling back the husk, then pierce a kernel with your thumbnail. Creamy liquid means it's ready. If the liquid's still watery, leave for a few more days.