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Scientific Name

Zea mays var. saccharata

Crop Culture

Sweetcorn is a warm-season crop that requires full sun and fertile, well-drained soil with a pH of 6.0-6.8. It's a heavy feeder, so prepare the soil with plenty of compost or a balanced fertilizer. Corn needs a long, warm growing season and should be planted only after the soil has warmed and there is no danger of frost.


Plant sweetcorn seeds 1 inch deep and 4-6 inches apart in rows that are 24-36 inches apart. For good pollination, plant in blocks of at least three to four rows rather than in single rows. Water consistently, especially during silk and tassel development, as corn is sensitive to drought.

Grow Guides

For a comprehensive guide on growing sweetcorn, including specific variety recommendations and care tips, refer to our detailed sweetcorn grow guide.

Diseases, Insects, and Weeds

Common pests include corn earworms and aphids. Diseases like corn smut and rust can also affect sweetcorn. Use row covers to protect young plants, and apply appropriate organic or chemical controls as necessary. Consistent weeding and mulching help manage weeds and conserve soil moisture.


Harvest sweetcorn when the kernels are full and milky, usually about 18-24 days after the silk appears. Check for ripeness by gently pulling back the husk and pressing a kernel with your thumbnail. Harvest by twisting the ear off the stalk with a sharp downward pull.

Storage and Preservation

Sweetcorn is best eaten fresh, but it can be stored in the refrigerator for a few days. For longer storage, blanch the ears for 4-7 minutes, cool in ice water, cut the kernels off the cob, and freeze them. Sweetcorn can also be canned or dried.