Find Your Growing Zone
Enter your ZIP code to discover your USDA Hardiness Zone, frost dates, and growing season length.
Understanding USDA Hardiness Zones
The USDA Plant Hardiness Zone Map is the standard by which gardeners can determine which plants are most likely to thrive at a location. The map is based on the average annual minimum winter temperature, divided into 10°F zones. Each zone is further divided into "a" and "b" subzones (5°F each).
All Hardiness Zones
Zone 1Extreme cold
-60°F to -50°F
Zone 2Very cold
-50°F to -40°F
Zone 3Cold
-40°F to -30°F
Zone 4Cold
-30°F to -20°F
Zone 5Moderate cold
-20°F to -10°F
Zone 6Moderate
-10°F to 0°F
Zone 7Mild
0°F to 10°F
Zone 8Mild
10°F to 20°F
Zone 9Warm
20°F to 30°F
Zone 10Very warm
30°F to 40°F
Zone 11Tropical
40°F to 50°F
Zone 12Tropical
50°F to 60°F
Zone 13Tropical
60°F+
Using Your Zone Information
- 1.Choose appropriate plants: Look for plants rated for your zone or lower. A Zone 5 gardener can grow Zone 5, 4, 3, 2, and 1 perennials.
- 2.Plan your timing: Use frost dates to determine when to start seeds indoors and when to transplant outdoors.
- 3.Consider microclimates: South-facing walls, urban heat islands, and low-lying areas can be warmer or cooler than your zone suggests.
- 4.Extend your season: Use cold frames, row covers, and greenhouses to grow plants outside your zone's typical range.