Plow, till or aerate the soil using a spade to prepare for planting the corn. Aerate to a 6-inch depth, breaking up any clods and removing large rocks that will prevent the soil from obtaining good contact with the seed.
Fertilize the soil with 12-12-12 fertilizer. Use 3 lbs. of the fertilizer per 100 square foot of field.
Check the temperature of the soil. It is not recommended to plant the corn before the soil at 6 inches depth has reached a temperature of 50 degrees Fahrenheit. Do not plant any seeds until a minimum of 10 days after the date of the last frost. Temperatures that are too low will inhibit growth or kill the seeds before they germinate.
Mark your rows for the corn using stakes with string tied between them. The rows must be spaced 3 feet apart.
Plant the seeds 1 inches to 2 inches down, depending on how heavy the soil is. Heavier soils require the seeds to be at a shallow depth. Space the seeds 10 inches apart. To lengthen the growing season, plant several rows, then wait two weeks before planting several more rows. Continue planting new rows every two weeks until mid-season.