Growing Zones Usa 2024 Season. The usda plant hardiness zones are related to the average lowest minimum temperature at a location. In the simplest terms, usda hardiness zones keep a grower in alaska from making the mistake of planting peach trees.

Understanding and using this map allows a gardener to select flowers, shrubs and trees that can survive winters in their specific region. These zones are delineated based on the average annual lowest minimum temperature.