Hardiness Zone Map 2024 Nfl. New usda hardiness zone map for illinois “the magnitude of change in the new maps really surprised me since it just reflects the last 30 years,” says illinois state. There's a good chance your zone shifted when the usda updated its plant hardiness map in 2023.

The brightly colored map, which can be found on the back of many seed packets, is intended to provide guidance for selecting the perennial plants that are most likely to do well. It also includes national, state and regional.