length of time for corn to germinate
Corn seed germinates in 10 to 14 days at 75Â°F, but the rate of germination may reach only 75 percent. Start corn indoors 2 to 3 weeks before the last frost in spring for transplanting 2 to 3 weeks after the last frost.If your season is long enough, plant successive crops every two to three weeks.Planting and spacing.lanting time. Corn is a tender, warm-season annual that is best planted after the soil temperature reaches 60Â°F, usually 2 or 3 weeks after the last frost in spring. Corn requires 60 to 100 frost-free days to reach harvest depending upon variety and the amount of heat during the growing season.