Plant hardiness zones are rules that inform gardeners what plants can withstand the local weather. The U.S. Department of Agriculture (USDA) designed a map that separates North America into zones ...

The USDA has updated the geographic zones that help gardeners select plants that are suitable for their regions. Learn why the map changed—and whether your area was affected.

In some areas, including the central Appalachians, northern New England and north central Idaho, winter temperatures have warmed by 1.5 hardiness zones – 15 degrees F (8.3 C) – over the same ...

The U.S. Department of Agriculture's Plant Hardiness Zone Map has been updated for the first time in more than a decade. About half of the country moved into a slightly warmer zone in the USDA's ...

The USDA Plant Hardiness Zone Map divides North America into 13 zones based on the average annual minimum winter temperature. In 2023, the USDA released an updated hardiness zone map in response ...

The USDA divides the United States into seven planting regions, known as hardiness zones, which were most recently updated in 2023.The maps below show these planting regions.

KEY CONCEPTS. Plant hardiness zones are shifting north as the U.S. warms, affecting farmers and gardeners. These zones, based on the coldest temperatures of the year, determine which plants can ...

In some areas, including the central Appalachians, northern New England and north central Idaho, winter temperatures have warmed by 1.5 hardiness zones – 15 degrees F (8.3 C) – over the same ...

Californians have long dreaded the 'Big One'. But growing fears of a deadly earthquake are no longer confined to just the Golden State. Here experts reveal the worst 'time bomb' zones in the US ...

Exactly 141 years ago at high noon, time changed forever in America. In Boston, time moved forward 16 minutes. In Baltimore 6. New Yorkers lost about 4 minutes. Those in Atlanta said goodbye to 22 ...

Hardiness zones are geographical areas divided up by climate that can be used to determine where different plants will grow best. Enlarge Image The USDA 2012 Plant Hardiness Zone Map.