Enter your ZIP code to see your USDA Plant Hardiness Zone (2023 map) — the number nurseries use to tell you which perennials survive your winter.
Enter your ZIP code above, or pick the nearest city.
How it’s figured
Each zone is a 10°F band of average annual extreme minimum winter temperature; “a” is the colder half, “b” the warmer half. A plant rated for your zone should survive a typical winter where you live. Zone data: PRISM Climate Group, Oregon State University (producers of the USDA 2023 Plant Hardiness Zone Map), accessed September 2026.
One zone is shown per ZIP (the value for the center of the ZIP code area) — your exact address can differ by half a zone, especially in hilly areas or near large bodies of water. Before buying borderline plants, confirm on the official USDA map.