Corn corn Sweet corn is a warm-season annual grown for its sweet, milky kernels eaten at the milk stage. It is frost-tender and needs a reliably warm summer to mature. Early, extra-early, and sugar-enhanced (sh2, se) varieties differ in time to maturity and sweetness; in cooler regions choose early cultivars. For good pollination and full cobs, grow in square or rectangular blocks of at least 12–16 plants rather than a single long row. Protect young plants from cold winds and birds. Soil should be fertile, moisture-retentive, and warm before sowing or transplanting. Growing conditions LightFull sun (at least 6–8 hours of direct light daily). Warm, sheltered site is best. Soil typeMoist but well-drained, fertile loam with high organic matter. Warms quickly in spring. Avoid waterlogging. Water requirementConsistent moisture, especially from tasseling to harvest. Aim for 25–40 mm per week; more in sandy soils. Nutrient requirementHigh feeder, especially nitrogen and potassium. Benefit from compost and side-dressing during rapid growth. Back to plant list
