New Hardiness Zone Map 2024. Recently released by the u.s. According to the new map released in november 2023, about half of the united states has shifted to a new hardiness zone.
Assessing potential climate change pressures across the conterminous united states: Department of agriculture (usda) released a new version of its plant hardiness zone map (phzm), updating this valuable tool for gardeners and researchers for the first time since 2012.