All Hardiness Zones
Browse lawn care guides for all 17 USDA hardiness zones in the United States. Find your zone and discover the best grasses, calendars, and care tips.
Zone 3B
Cold continental
-35° to -30°F
23 counties · 3 states
Zone 4A
Cold continental
-30° to -25°F
85 counties · 8 states
Zone 4B
Cold continental
-25° to -20°F
137 counties · 12 states
Zone 5A
Cool-season classic
-20° to -15°F
248 counties · 15 states
Zone 5B
Cool-season classic
-15° to -10°F
232 counties · 19 states
Zone 6A
Cool-season classic
-10° to -5°F
358 counties · 24 states
Zone 6B
Cool-season classic
-5° to 0°F
381 counties · 26 states
Zone 7A
Transition zone
0° to 5°F
361 counties · 28 states
Zone 7B
Transition zone
5° to 10°F
289 counties · 25 states
Zone 8A
Warm-season
10° to 15°F
334 counties · 17 states
Zone 8B
Warm-season
15° to 20°F
322 counties · 17 states
Zone 9A
Warm-season
20° to 25°F
186 counties · 13 states
Zone 9B
Warm-season
25° to 30°F
81 counties · 6 states
Zone 10A
Subtropical
30° to 35°F
27 counties · 4 states
Zone 10B
Subtropical
35° to 40°F
9 counties · 2 states
Zone 11A
Tropical
40° to 45°F
2 counties · 1 states
Zone 11B
Tropical
45° to 50°F
1 counties · 1 states