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.
Sweet corn is a annual that prefers to be planted once the temperature of the soil reaches 60 degrees Fahrenheit or higher, which comes about one month after the last threat of frost.weet corn is a annual that prefers to be planted once the temperature of the soil reaches 60 degrees Fahrenheit or higher, which comes about one month after the last threat of frost.