Show zones using

USDA Zone 4

Average annual extreme minimum temperature: -34.4 to -28.9°C (-30 to -20°F).

Minimum temperature (°C)
-34.4 to -28.9
Minimum temperature (°F)
-30 to -20
RHS
H7
EGHZ
Zone 4
NRCan
Zone 3
Climate class
Middle 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

Explorer series, hardy shrubs

Important limitations

The USDA map uses extreme minimum temperature only and does not account for summer heat, snow cover, or wind desiccation.

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Cultivar notes

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