To grow sweet corn, choose a sunny sheltered plot.
Prepare beds with well-rotted manure or garden compost to provide moisture and nitrogen. You can also add a high-nitrogen fertiliser.
Sow seeds indoors. Keep at 15-20ºC until shoots appear.
Plant out when danger of frost has passed.
Space plants 18×18 inches apart in blocks, not rows.
Protect from slugs and keep well watered, especially once flower tassels appear.
Cobs are ready to harvest when their silks turn brown.