New Hardiness Zone Map 2024 Map. 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. Read more here so you're ready to plant this spring.
According to the new map released in november 2023, about half of the united states has shifted to a new hardiness zone. Though it doesn’t affect us here in chicago, it’s useful for house or patio plants that are.