Enter your 5-digit ZIP code. Your zone comes from the official 2023 USDA Plant Hardiness Zone Map data.
What growing zone am I in?
Enter your ZIP code.
What your zone means
Your zone is based on the average coldest winter night where you live, from weather data for 1991 to 2020. Each zone is 10°F wide; "a" is the colder half and "b" the warmer half. Use it to check plant tags: if your zone is inside a plant's listed range, it should survive a typical winter.
Zones can vary within a ZIP code with elevation, slope and nearness to water, so treat the result as a guide.
Data: PRISM Climate Group, Oregon State University: 2023 USDA Plant Hardiness Zone Map ZIP code listings. Place names: GeoNames postal code data (CC BY 4.0). Not the official USDA map.
Frequently asked questions
How do I find my planting zone?
Enter your ZIP code above. The zone comes from the 2023 USDA map ZIP code listing.
What do the a and b mean?
Each 10°F zone is split into two 5°F halves: a is colder, b is warmer.