Zone 4b -25°F to -20°F | Zone 5a -20°F to -15°F | Zone 5b -15°F to -10°F |
Zone 6a -10°F to -5°F | Zone 6b -5°F to 0°F | Zone 7a 0°F to 5°F |
Based on the 1990 USDA Hardiness Zone Map, this interactive version covers the state of Massachusetts which ranges from USDA Zone 4b to USDA Zone 7a.