Usda Plant Zones 2024. The plant hardiness zone map — a resource that gardeners and growers across the country use to determine which perennial plants can grow in their area —. The usda plant hardiness zones are related to the average lowest minimum temperature at a location.
According to the new map released in november 2023, about half of the united states has shifted to a new hardiness zone. The plant hardiness zones detailed in the new map define 13 distinct zones across the us and its territories.