New Hardiness Zone Map 2024 Indiana. The updated hardiness zone map from the u.s. With the new usda plant hardiness map, our state now recognizes larger areas of zone 5a, particularly in urban and southwestern areas, supporting a broader palette of plants such as oakleaf.

The 2023 hardiness map is. 879 rows based on the 1990 usda hardiness zone map, this interactive version covers the state of indiana which ranges from usda zone 5a to usda zone 6b.