Usda Plant Hardiness Zone 2024. View the new 2023 pennsylvania hardiness zone map. Based on the 1990 usda hardiness zone map, this interactive version covers the state of louisiana which ranges from usda zone 8a to usda zone 9a.

Understanding and using this map allows a gardener to select flowers, shrubs and trees that can survive winters in their specific region. View the new 2023 illinois hardiness zone map.