USDA Hardiness Zones
The USDA Plant Hardiness Zone Map is the standard guide for determining which plants can survive winter in your location. Find your zone and browse plants that thrive there.
1a
Zone 1a
Below -60°F
Below -51°C
1b
Zone 1b
-60 to -55°F
-51 to -48°C
2a
Zone 2a
-55 to -50°F
-48 to -46°C
2b
Zone 2b
-50 to -45°F
-46 to -43°C
3a
Zone 3a
-45 to -40°F
-43 to -40°C
3b
Zone 3b
-40 to -35°F
-40 to -37°C
4a
Zone 4a
-35 to -30°F
-37 to -34°C
4b
Zone 4b
-30 to -25°F
-34 to -32°C
5a
Zone 5a
-25 to -20°F
-32 to -29°C
5b
Zone 5b
-20 to -15°F
-29 to -26°C
6a
Zone 6a
-15 to -10°F
-26 to -23°C
6b
Zone 6b
-10 to -5°F
-23 to -21°C
7a
Zone 7a
-5 to 0°F
-21 to -18°C
7b
Zone 7b
0 to 5°F
-18 to -15°C
8a
Zone 8a
5 to 10°F
-15 to -12°C
8b
Zone 8b
10 to 15°F
-12 to -9°C
9a
Zone 9a
15 to 20°F
-9 to -7°C
9b
Zone 9b
20 to 25°F
-7 to -4°C
10a
Zone 10a
25 to 30°F
-4 to -1°C
10b
Zone 10b
30 to 35°F
-1 to 2°C
11a
Zone 11a
35 to 40°F
2 to 4°C
11b
Zone 11b
40 to 45°F
4 to 7°C
12a
Zone 12a
45 to 50°F
7 to 10°C
12b
Zone 12b
50 to 55°F
10 to 13°C
13a
Zone 13a
55 to 60°F
13 to 16°C
13b
Zone 13b
Above 60°F
Above 16°C