Plant hardiness zones are shifting northward nationwide as the country continues to warm, affecting farmers, gardeners and ...

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.

For example, tropical Bird of Paradise flowers are suitable for growing in USDA plant hardiness zones 10 to 12, so there’s probably no point planting this if you don’t have warm winters ...

Gardeners and farmers across the U.S. look to plant hardiness zones for guidance on which plants to grow. The U.S. is divided into 13 plant hardiness zones based on the local coldest temperature ...

The concept of hardiness zones was first introduced in 1927 by Dr. Alfred Rehder. Rehder worked at Harvard’s Arnold Arboretum as a botanical taxonomist.

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 ...

Plant hardiness zones in Wisconsin range from 6a, which denotes an average minimum temperature of -5 to -10 degrees, to 3b, which is an average minimum of -30 to -35 degrees.

Ohio is part of 4 hardiness zones, 5b through 7a, on a scale that goes from 1a to 13b. “In 5b, the temperature range is -15 to -10 degrees Fahrenheit for the average annual extreme minimum ...