Using historical climate data from Canadian National Climate Data Archive, this interactive map created by Plantmaps covers Canada which ranges from Zone 1a to Zone 10b.
0°F to 5°F Zone 7a |
15°F to 20°F Zone 8a |
20°F to 25°F Zone 9a |
30°F to 35°F Zone 10a |
Zone 7b5°F to 10°F |
Zone 8b15°F to 20°F |
Zone 9b25°F to 30°F |
Zone 10b35°F to 40°F |
Zone 6a-10°F to -5°F |
Zone 6b-5°F to 0°F |
Zone 5a-20°F to -15°F |
Zone 5b-15°F to -10°F |
Zone 4a-30°F to -25°F |
Zone 4b-25°F to -20°F |
Zone 3a-40°F to -35°F |
Zone 3b-35°F to -30°F |
Zone 2a-50°F to -45°F |
Zone 2b-45°F to -40°F |
Zone 1a-60°F to -55°F |
Zone 1b-55°F to -50°F |