Updated January 2015. The increased cost of health insurance is a central fact in any discussion of health policy and health delivery. As annual premiums edged beyond $16,800 for an average family, costs are blamed for rising uninsured and under-insurance..
Figure 1. Corn growth and temperature levels. Corn will germinate and grow slowly at about 50 F (10 C), but the average first spring planting dates across the U.S. usually begin when the average air temperatures reach 55 F (13 C) and soil temperature at seed depth is favorable for seedling growth.
Plant the seed corn at a depth of about 1 1/2 to 2 inches deep when the soil temperature reaches at least 55 degrees Fahrenheit; cooler temperatures keep the kernels from germinating and the seed will rot in the ground. Space the seeds at least 6 inches apart in both directions in 3-by-5-foot sections.