HardinessZone Finder
Hardiness Zone Finder
HardinessZoneFinder
Hardiness Zone Finder
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The Hardiness Zone Finder identifies your USDA hardiness zone and recommends plants suited to your climate. Hardiness zones are based on average annual minimum temperatures. Choose plants with the best chance of survival in your region.
Características Principales
USDA hardiness zone lookup
Zip code search
Plant hardiness filtering
Microclimatic adjustments
Cold and heat tolerance comparison
Seasonal planting calendar
How to Use Hardiness Zone Finder
Enter Your Location
Input zip code or city to find your USDA hardiness zone.
Review Zone Information
See zone number, average minimum temperature, and regional classification.
Consider Microclimates
Note elevation, proximity to water, urban heat islands affecting your specific location.
Explore Recommended Plants
Browse plants adapted to your hardiness zone for landscape and garden use.
Check Extended Zone Data
Review heat zone (AHS) data for summer temperature information.
Plan for Transitions
Learn about transitional zone edge cases (marginal plants needing extra protection).
Casos de Uso
Perennial plant selection
Tree and shrub selection
Tropical plant overwintering
Garden planning by region
Landscape design
Cold-hardiness research
Preguntas Frecuentes
What is a hardiness zone?
USDA hardiness zones (1-13) are based on average annual minimum winter temperatures. Each zone spans 10 degrees Fahrenheit.
How do I find my hardiness zone?
Enter your zip code in the finder, or check the USDA Hardiness Zone Map online. Local extension offices can provide specific information.
Can I grow plants from warmer zones?
You can try plants from warmer zones, but they may not survive winter. Provide winter protection (mulch, burlap) or grow them as annuals.
What about heat zones?
Heat zones (AHS) measure summer temperatures and are important for summer-sensitive plants. Use both cold hardiness and heat zone for best selection.
Do microclimates really matter?
Yes, you may have warmer or cooler spots in your yard. South-facing walls are warmer. Low spots collect cold air. Use these microclimates strategically.