The U.S. Department of Agriculture published a new version of its well-known Plant Hardiness Zone ... Arizona spans across zones 5 through 10. The new map, created by USDA's Agricultural Research ...

To help farmers and gardeners lay the foundation for their crops and gardens, the United States Department of Agriculture has a Plant Hardiness Zone Map. For the first time since 2012, the USDA ...

And last week, the USDA ... map was last updated in 201—but when it does change, as it just did, it can upend what you know about your garden. It used to be easier to find your hardiness zone ...

The United States Department of Agriculture (USDA) released a new version of its Plant Hardiness Zone map, the first update since 2012. This new map is a tool used to help gardeners and growers ...

How were the new plant zones determined ... average temperatures recorded over 50 to 100 years. The USDA Plant Hardiness Zone Map represents 30-year averages of what are essentially extreme ...