About

Sweetcorn is relatively easy to grow and without a doubt tastes so much better that shop bought. There's a great range of varieties to grow, both heritage and modern, and something to suit most gardens and the shorter British summers. If you are short on space you could also try growing baby corn. Sweetcorn is generally classified into three groups. 'Normal' which is the original type of sweetcorn and seeds tend to have the most vigour - they're not as sweet as some of the newer varieties and should be eaten as soon as picked to avoid the sugar being converted to starch. 'Supersweet' which, as the name suggests, have a high sugar content but are not so easy to germinate. 'Supersweet' varieties should not be grown with other varieties as cross-pollination can result in a reduction in sugar content. 'Tendersweet' which are both tender and sweet (although not as sweet as 'supersweet') and can be grown alongside other varieties.

About the genus

A genus of five, large, flowering plants the grass family. The most important species, Zea mays is widely cultivated food crop. Male flowers are borne in large, terminal inflorescences (tassels) and female flowers are hidden in clusters in the leaf axils

Growing conditions

SunlightFull sun
Soil typeChalk, Clay, Loam, Sand
Soil pHAcid, Neutral
Soil moistureMoist but well-drained
AspectEast-facing, West-facing, South-facing
ExposureSheltered
UK hardinessH2

Plant details

Plant typeAnnual Biennial
HabitColumnar upright
FoliageDeciduous
Height1.5-2.5 metres
Spread0.5-1 metres
Time to full height1 year
Suggested usesPrairie planting, borders, naturalistic schemes.

Care notes

CultivationGrow in a sunny, sheltered spot in soil that has been enriched with well-rotted organic matter. Sweetcorn can tolerate many soil types but prefers well-drained soils with a pH between 5.5 and 7.0. Harvest from July to October. See sweetcorn cultivation for futher information.
PruningNo pruning required.
PropagationSow seeds undercover from mid-spring in pots or modules and then plant out May - June after hardening off and the last of the frosts have passed. Alternatively sow 'in situ' from late spring to early summer. Always plant in a grid pattern to ensure pollination. See sowing vegetable seeds
Pest resistanceMay be susceptible to damage from birds, slugs, mice and badgers.
Disease resistanceMay be susceptible to smuts which apppear as large galls on the cobs and stalks in hot weather.
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