# USDA Plant Hardiness Zone Map

> Classes and training from USDA Agricultural Research Service (Federal) for United States.

Official page: https://planthardiness.ars.usda.gov/
Source: https://treerm.org/residents/programs/us-usda-plant-hardiness-zone-map · Updated 2026-11-08 · Status: Open

**What you get:** Free zip-code lookup of your cold-hardiness zone so you choose trees that will survive your winters

The 2023 USDA Plant Hardiness Zone Map is the standard reference for which perennial plants and trees are likely to survive at a location, based on average annual extreme minimum temperature in 10-degree F zones and 5-degree half zones. Enter a zip code in the interactive map or download state and regional maps.

## Who qualifies

Anyone; no sign-up.

## How to apply

Visit planthardiness.ars.usda.gov and enter your zip code in the Quick Zip Code Search, or download a printable map. Questions go to phzminfo@usda.gov.

**For:** Homeowners, Renters, Landowners, Farmers, Schools