Usda Hardiness Zone Map 2024 Pdf. The usda recently updated their plant hardiness maps, due to the warming temperatures in both summer and winter. For example, seattle, washington, and the city of austin, texas, are both in the usda hardiness zone 9a because the map is a measure of the coldest temperature a plant can handle.

As an avid gardener, i’ve learned that different plants thrive in different gardening zones, largely dictated by climate and. And those changes could impact what thrives in your.