Sow directly when ground temperature reaches 18 degrees Celsius. Cold ground temperatures will result in poor germination as the seed is untreated and may rot. Space rows 76-90cm apart, sowing every 15-17cm at a depth of 2.5cm. To achieve maximum pollination sow corn in blocks as opposed to a single row. Corn is wind-pollinated and having the plants in close proximity to each other will ensure well filled ears.