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. Trouble seeing the map?

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In the 2023 USDA Plant Hardiness Zone map, which was generated based on weather data gathered from 1991 to 2020, about half the United States moved into a warmer zone. “Overall, the 2023 map is ...

The importance of hardiness zones lies in their ability to help gardeners and farmers choose plants that will thrive in their ...