Us Hardiness Zones 2024. The usda hardiness zone map is a valuable tool for assessing plant hardiness based on average annual extreme minimum winter temperatures. Look at your growing zone or.
Released in november 2023, the updated map was developed by oregon state university’s prism climate group and the usda’s agricultural research service. Understanding and using this map allows a gardener to select flowers, shrubs and trees that can survive winters in their specific region.