According to the USDA, these zones are "based on the average annual extreme minimum winter temperature." They are displayed as "10-degree F zones ranging from zone 1 (coldest) to zone 13 (warmest).

When picking plants to grow in your garden, it’s easy to just go with what you like or whatever plants your neighbors grow.

The USDA defines plant hardiness zones based on the coldest average annual temperature in winter at a given location. Each zone represents a 10-degree F range, with zones numbered from 1 (coldest ...

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 USDA plant hardiness zone map gives us an idea of our average high and low temperatures,” says McClure. She comes from a horticultural family and manages about 100 volunteer master gardeners ...

The last time the USDA changed the Hardiness Zone map was 2012. ... The other half of Ohio is now in Zone 6a, where the average low temperature range is -10 to -5 degrees Fahrenheit.

About half of the country moved into a slightly warmer zone in the Agriculture Department’s new “plant hardiness” map, an important guide for gardeners. Climate change may be a factor.

With the recent development of an enhanced Plant Hardiness Zone Map, the United States Department of Agriculture (USDA) has provided farmers and gardeners a more accurate guide to planting in ...

The U.S. Department of Agriculture (USDA) has updated its Plant Hardiness Zone Map — the first revision since 2012. It shows that Massachusetts is getting warmer, leading to more options for ...

The USDA's new plant hardiness zone map shows that Syracuse and Central New York are getting warmer. ... In zone 5a, the lowest temperature on average was between minus 15 and minus 20 degrees ...

CINCINNATI (WKRC) - Plant hardiness zones have long been a useful guideline for determining if what you're planting in your yard can handle cold temperatures. The USDA’s Agricultural Research ...

Louisiana's growing zones range from 8b in North Louisiana to 10a at the state's southern-most tip, with majority of the state falling into either zones 8 and 9, according to USDA's Hardiness Zone ...