The United States is divided into 13 different plant hardiness zones, each with "A" and "B" subdivisions. This is a number assigned to a plant that tells you how cold of a temperature the plant can ...

Question: My husband bought a few plants at a nursery recently. There was a tag describing the USDA Climate Zone. I live in Sonoma 9a, but I saw other zones mentioned such as 9b and 10. There was also ...

In November, the U.S. Department of Agriculture released its latest version of the Hardiness Zone Map. This mapping system categorizes geographic regions according to their average annual minimum ...

On Nov. 15, the U.S. Department of Agriculture released a revised version of its Plant Hardiness Zone Map. This map is what home gardeners, as well as professional growers, use to determine which ...