Corn should be planted 8 to 15 inches apart in rows that are 36 to 42 inches from one another, according to SFGate. Corn spreads 2 to 4 feet wide.
Corn grows in USDA hardiness zones 3 to 11, according to SFGate. The space between rows is the same whether it is hybrid corn, sweet corn, yellow corn or another type. Corn is a fast-growing crop and needs much space in the garden. When planting more than one seed at a time, they will need to be thinned out to this spacing for correct crop growth. Corn is wind-pollinated, according to SFGate.