What planting zone am I in?
Enter your ZIP code to see your USDA hardiness zone and your average last and first frost dates.
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Hardiness zone vs. frost dates
Your hardiness zone tells you which perennials, shrubs and trees survive your winters: it is based on the average coldest night of the year. Your frost dates tell you when to plant: the average last spring frost and first fall frost define your growing season. You need both, and they come from different official data sets: the USDA Plant Hardiness Zone Map 2023 and NOAA's 1991–2020 Climate Normals.