The USDA plant hardiness zone map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location.
Approximate Range of Average Annual Temperatures for Each Zone
| Zone 2: -50 to -40 Degrees | |
| Zone 3: -40 to -30 Degrees | |
| Zone 4: -30 to -20 Degrees | |
| Zone 5: -20 to -10 Degrees | |
| Zone 6: -10 to 0 Degrees | |
| Zone 7: 0 to 10 Degrees | |
| Zone 8: 10 to 20 Degrees | |
| Zone 9: 20 to 30 Degrees | |
| Zone 10: 30 to 40 Degrees |