Hardiness Zones
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Zone 2
Hardiness zone 2: lowest average temperatures of -50°F to -40°F or -45.6°C to -40°C
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Zone 3
Hardiness zone 3: lowest average temperatures of -40°F to -30°F or -40°C to -34.4°C
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Zone 4
Hardiness zone 4: lowest average temperatures of -30°F to -20°F or -34.4°C to -28.9°C
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Zone 5
Hardiness zone 5: lowest average temperatures of -20°F to -10°F or -28.9°C to -23.3°C
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Zone 6
Hardiness zone 6: lowest average temperatures of -10°F to 0°F or -23.3°C to -17.8°C
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Zone 7
Hardiness zone 7: lowest average temperatures of 0°F to 10°F or -17.8°C to -12.2°C
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Zone 8
Hardiness zone 8: lowest average temperatures of 10°F to 20°F or -12.2°C to -6.7°C
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Zone 9
Hardiness zone 9: lowest average temperatures of 20°F to 30°F or -6.7°C to -1.1°C
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Zone 10
Hardiness zone 10: lowest average temperatures of 30°F to 40°F or -1.1°C to 4.4°C
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Zone 11
Hardiness zone 11: lowest average temperatures of 40°F to 50°F or 4.4°C to 10°C
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Zone 12
Hardiness zone 12: lowest average temperatures of 50°F and 60°F or +10°C and +15.6°C
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Zone 13
Hardiness zone 13: lowest average temperatures of 60°F and 70°F or +15.6°C and +21.1°C
Plant Family
Plant Family
Plant Family
Guide
Guide
