Plant Hardiness Zone Map 2024. The plant hardiness zone map was updated for the 2024 gardening season with the addition of thousands more local weather stations. The new usda plant hardiness zone map (phzm) has been released!
The new map provides valuable insights for gardeners that just might alter the way they plan and schedule their plantings. 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.