Hardiness Zones 101 The USDA Plant Hardiness Zone Map consists of 13 individual zones that take in all of the contiguous United States, plus Alaska, Hawaii, and Puerto Rico. The first zone lies at ...

The importance of hardiness zones lies in their ability to help gardeners and farmers choose plants that will thrive in their ...

The SREC is located in United States Department of Agriculture (USDA) plant hardiness zone 4 with an average growing season of 120 days. Average annual precipitation is 15 inches. The SREC was jointly ...