NRCan Zone 8
Average annual extreme minimum temperature: -6.7 to -1.1°C (20 to 30°F).
USDA, RHS, EGHZ & NRCan cross-reference
See how this rating compares across global hardiness systems. Matching USDA zones are highlighted.
| USDA | Min. temp. (°C) | Min. temp. (°F) | RHS | EGHZ | NRCan | Climate class |
|---|---|---|---|---|---|---|
| USDA Zone 1 | < -45.6 | < -50 | — | 0 | 0 | Arctic Alpine |
| USDA Zone 2 | -45.6 to -40.0 | -50 to -40 | H7 | 2 | 1 | Subarctic |
| USDA Zone 3 | -40.0 to -34.4 | -40 to -30 | H7 | 3 | 2 | Northern Taiga |
| USDA Zone 4 | -34.4 to -28.9 | -30 to -20 | H7 | 4 | 3 | Middle Taiga |
| USDA Zone 5 | -28.9 to -23.3 | -20 to -10 | H6 | 5 | 4 | Southern Taiga |
| USDA Zone 6 | -23.3 to -17.8 | -10 to 0 | H5/H6 | 6 | 5 | Mixed Forest |
| USDA Zone 7 | -17.8 to -12.2 | 0 to 10 | H4/H5 | 7 | 6 | Forest-Steppe |
| USDA Zone 8 | -12.2 to -6.7 | 10 to 20 | H4 | 8 | 7 | Steppe |
| USDA Zone 9 | -6.7 to -1.1 | 20 to 30 | H3 | 9 | 8 | Semiarid |
| USDA Zone 10 | -1.1 to +4.4 | 30 to 40 | H2 | 10 | 9 | Subtropical |
| USDA Zone 11 | +4.4 to +10.0 | 40 to 50 | H1c | 11 | — | Moist Tropical |
| USDA Zone 12 | +10.0 to +15.6 | 50 to 60 | H1b | — | — | Humid Equatorial |
| USDA Zone 13 | > +15.6 | > 60 | H1a | — | — | Hyper-Humid Equatorial |
Recommended rose classes
Chinas, Teas, Warm Climbers
Important limitations
The USDA map uses extreme minimum temperature only and does not account for summer heat, snow cover, or wind desiccation.
Browse all NRCan zones
Roses in our encyclopedia
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