Show zones using

NRCan Zone 4

Average annual extreme minimum temperature: -28.9 to -23.3°C (-20 to -10°F).

Minimum temperature (°C)
-28.9 to -23.3
Minimum temperature (°F)
-20 to -10
USDA
Zone 5
RHS
H6
EGHZ
Zone 5
Climate class
Southern Taiga

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

Hardy Gallicas, Ramblers

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

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Cultivar notes

Roses in our encyclopedia

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Abraham Darby Abraham Darby Shrub rose USDA Zone 5 Adam Messerich Adam Messerich Bourbon rose USDA Zone 5 Alain Blanchard Alain Blanchard Gallica rose USDA Zone 5 Alan Titchmarsh Alan Titchmarsh Shrub rose USDA Zone 5 Albertine Albertine Climbing rose USDA Zone 5 Alden Biesen Alden Biesen Hybrid Musk USDA Zone 5 Alissar Princess Of Phoenicia Alissar Princess Of Phoenicia Hybrid Hulthemia persica USDA Zone 5 Alister Stella Gray Alister Stella Gray Noisette rose USDA Zone 5 Ambridge Rose Ambridge Rose Shrub rose USDA Zone 5 Ann Ann Shrub rose USDA Zone 5 Anne Boleyn Anne Boleyn Shrub rose USDA Zone 5 Anny Duperey Anny Duperey Shrub rose USDA Zone 5