Days to Harvest: 65 to 100 days.
Temperature: Warm season, 60° to 75° F.
Companions: Beans, sunflowers, legumes, peas, peanuts, squash, cucumbers, melons, amaranth, white geranium, lamb's quarters, morning glory, parsley, and potatoes.
Avoid Planting Near: Tomatoes and celery.
Preparation: Corn planting area should be on north end of garden so it does not shade other plants.
Planting: Direct seed after danger of frost is past. Successive plantings of different varieties is good idea though early summer.
Spacing: 9 to 12 inches between plants and 2 to 3 feet between rows. Plant a minimum of three rows side by side to ensure good pollination.
Water: 1 inch per week.
Harvest: Sweet corn is ready for harvest about 20 days after first silks appear. Husk will be green. Puncture kernel. If the liquid is clear, the corn is immature; if it's milky, it’s ready to pick. The best time of day to pick is right before eating. Or, pick in the early morning when temperatures are cool to prevent buildup of field heat, causing sugars to convert to starch.
Tips: Mulching is useful because adequate moisture is necessary from time of pollination to harvest to make sure ears are well filled.