Us Hardiness Zone Map 2024 Map Us. The usda hardiness map—the official name is plant hardiness zone map—helps gardeners determine which perennial plants can survive in their climate. Each growing zone is 10°f warmer (or colder) in an average winter than the adjacent zone.
Department of agriculture’s ” plant hardiness zone map ” was updated wednesday for the first time in a decade, and it shows the impact that climate change will have on gardens. Released in november 2023, the updated map was developed by oregon state university’s prism climate group and the usda’s agricultural research service.
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