Madison, Wisconsin, is projected to switch zones as the average coldest temperature is expected to increase by 8.4 degrees Fahrenheit.

hen Jenica Allen started to redo her yard, there were certain factors she took into account, like how the land has a gentle ...

Holly Jones started studying the micro-climate and the topography on her family farm near Crawfordsville, about 40 miles south of Iowa City, Iowa.

They are in the USDA's Zone 9b, Sunset's Zone 12, AHS' Zone 8 and Arizona's Zone 4. Together, that means gardeners should grow plants that survive in temperatures as low as 25 degrees.

Around this time, the U.S. Department of Agriculture updated its plant hardiness zones map, which divides the United States into 13 zones based on average annual minimum temperatures in a given ...