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Plant hardiness zones in Quebec

Hardiness refers to a code attributed to a plant based on its capacity to thrive through winter. It is a useful tool to help you choose the plants best adapted to the climate of your region in Quebec.

What is a plant hardiness zone

Agriculture Canada has identified 9 major growth zones ranging from 0 to 8. They have taken into account various elements such as:

  • Minimum winter temperatures
  • Duration of frost-free periods
  • Summer rainfall
  • Maximum temperatures
  • Snow cover
  • January rainfall
  • Maximum wind speed

Zone 0 is the hardest and coldest. Few plants have this rating. A plant identified with this rating is grown in almost all areas.

In contrast, zone 9 is not very hardy and often associated with plants from the tropics. A plant with this rating, does not resist in the lower zones.

This index is affected positively or negatively by other conditions such as a microclimate, a wind corridor, an abundant snow cover.

What is my plant hardiness zone

When selecting trees, shrubs and flowers to incorporate into your landscaping, it is important to check the hardiness zone. This new map takes climate change into account.

Consult the map on the Natural Resources Canada website

Hardiness zones for certain cities in Quebec


Zones and temperatures

Acton Vale Zone 5a: -28.9°C to -26.1°C
Alma Zone 3b: -37.2°C to -34.4°C
Amos Zone 2a: -45.6°C to -42.8°C
Asbestos Zone 4b: -31.7°C to -28.9°C
Baie-Comeau Zone 4a: -34.4°C to -31.7°C
Baie-Saint-Paul Zone 4b: -31.7°C to -28.9°C
Beauport Zone 5a: -28.9°C to -26.1°C
Beaupré Zone 5a: -28.9°C to -26.1°C
Bécancour Zone 5a: -28.9°C to -26.1°C
Belœil Zone 5b: -26.1°C to -23.3°C
Blainville Zone 5b: -26.1°C to -23.3°C
Boucherville Zone 6a: -23.3°C to -20.6°C
Bromont Zone 5b: -26.1°C to -23.3°C
Brossard Zone 6a: -23.3°C to -20.6°C
Chambly Zone 5b: -26.1°C to -23.3°C
Chapais Zone 2a: -45.6°C to -42.8°C
Châteauguay Zone 6a: -23.3°C to -20.6°C
Chibougamau Zone 2a: -45.6°C to -42.8°C
Coaticook Zone 4b: -31.7°C to -28.9°C
Contrecœur Zone 5b: -26.1°C to -23.3°C
Cowansville Zone 5b: -26.1°C to -23.3°C
Dolbeau-Mistassini Zone 2b: -42.8°C to -40°C
Drummondville Zone 5a: -28.9°C to -26.1°C
Fermont Zone 1a: -51.1°C to -48.3°C
Gaspé Zone 4a: -34.4°C to -31.7°C
Gatineau Zone 5a: -28.9°C to -26.1°C
Granby Zone 5b: -26.1°C to -23.3°C
Joliette Zone 5a: -28.9°C to -26.1°C
Jonquière Zone 3b: -37.2°C to -34.4°C
La Malbaie Zone 4a: -34.4°C to -31.7°C
La Prairie Zone 6a: -23.3°C to -20.6°C
La Tuque Zone 3b: -37.2°C to -34.4°C
Lac-Mégantic Zone 4b: -31.7°C to -28.9°C
Laval Zone 5b: -26.1°C to -23.3°C
Lévis Zone 5a: -28.9°C to -26.1°C
Longueuil Zone 6a: -23.3°C to -20.6°C
Magog Zone 5a: -28.9°C to -26.1°C
Mascouche Zone 5b: -26.1°C to -23.3°C
Matane Zone 4b: -31.7°C to -28.9°C
Mont-Joli Zone 4b: -31.7°C to -28.9°C
Mont-Laurier Zone 4a: -34.4°C to -31.7°C
Montmagny Zone 5a: -28.9°C to -26.1°C
Montréal Zone 6a: -23.3°C to -20.6°C
Mont-Saint-Hilaire Zone 5b: -26.1°C to -23.3°C
Mont-Tremblant Zone 4a: -34.4°C to -31.7°C
Nicolet Zone 5a: -28.9°C to -26.1°C
Plessisville Zone 4b: -31.7°C to -28.9°C
Port-Cartier Zone 4a: -34.4°C to -31.7°C
Québec Zone 5a: -28.9°C to -26.1°C
Repentigny Zone 5b: -26.1°C to -23.3°C
Rimouski Zone 5a: -28.9°C to -26.1°C
Rivière-du-Loup Zone 4b: -31.7°C to -28.9°C
Rouyn-Noranda Zone 2b: -42.8°C to -40°C
Saguenay Zone 3b: -37.2°C to -34.4°C
Saint-Basile-le-Grand Zone 5b: -26.1°C to -23.3°C
Saint-Bruno-de-Montarville Zone 5b: -26.1°C to -23.3°C
Sainte-Agathe-des-Monts Zone 4a: -34.4°C to -31.7°C
Sainte-Julie Zone 5b: -26.1°C to -23.3°C
Saint-Eustache Zone 5b: -26.1°C to -23.3°C
Saint-Félicien Zone 3a: -40°C to -37.2°C
Saint-Hyacinthe Zone 5b: -26.1°C to -23.3°C
Saint-Jean-sur-Richelieu Zone 5b: -26.1°C to -23.3°C
Saint-Jérôme Zone 5a: -28.9°C to -26.1°C
Saint-Sauveur Zone 4b: -31.7°C to -28.9°C
Salaberry-de-Valleyfield Zone 5b: -26.1°C to -23.3°C
Sept-Îles Zone 3b: -37.2°C to -34.4°C
Shawinigan Zone 4b: -31.7°C to -28.9°C
Sherbrooke Zone 5a: -28.9°C to -26.1°C
Sorel-Tracy Zone 5b: -26.1°C to -23.3°C
Terrebonne Zone 5b: -26.1°C to -23.3°C
Thetford Mines Zone 4b: -31.7°C to -28.9°C
Trois-Rivières Zone 5a: -28.9°C to -26.1°C
Val d'Or Zone 2b: -42.8°C to -40°C
Victoriaville Zone 4b: -31.7°C to -28.9°C