Zone 3a -40°F to -35°F | Zone 3b -35°F to -30°F | Zone 4a -30°F to -25°F | 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 USDA Hardiness Zone Map, this interactive version covers the country of Iceland which ranges from Zone 3a to Zone 8b.