Sometimes called “growing zones” or “gardening zones,” hardiness zones refer to a map developed by the USDA that separates the United States into regions based on the average low winter temperatures.

Low temperature is a crucial factor in the survival of plants at specific locations, but it's not the only thing for gardeners to keep in mind when selecting plants and locations for them to grow.

The U.S. Department of Agriculture unveiled its long-awaited update of its 1990 U.S. Plant Hardiness Zone Map Thursday at the National Arboretum in Washington. The map, which was revised to reflect ...

What is a USDA growing zone, and which one are you in? The answer to one of these questions may be different than what it was only a few years ago. USDA growing zones, in general, help you know which ...

Heat domes, atmospheric rivers, bomb cyclones, and polar vortex—you’re not crazy, the weather is. And last week, the USDA confirmed it by releasing an updated climate zone map for 2023. And for many ...

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 ...

The U.S. Department of Agriculture recently released a new version of its Plant Hardiness Zone Map, updating this valuable tool for gardeners and researchers for the first time since 2012. USDA’s ...

The United States Department of Agriculture (USDA) recently released its updated Plant Hardiness Zone Map. The USDA Plant Hardiness Zone Map uses weather data to map average annual extreme minimum ...

When spring arrives, gardeners are ready to buy plants, and many times we are trying something new and different. View full sizeIllustration by Kenneth Harrison / The Times-Picayune One of the most ...

In the news recently, the U.S. Department of Agriculture revised its plant hardiness zone map for the first time in more than a decade. As always, this is a hot topic in horticultural circles. What is ...

Growing zones, also referred to as hardiness zones, are geographical areas categorized based on average annual minimum winter temperatures in order to determine which plants are likely to thrive in a ...

The Department of Agriculture updated its searchable map of the country that shows how much average low temperatures have changed during the last 30 years, and half the country's lows were higher by 5 ...