Plant Hardiness Zones in Canada
| Zone | Hardiness of Some Trees |
|---|---|
| 9a | Southern magnolia (Magnolia grandiflora) |
| 8 | Pacific madrone (Arbutus menziesii) Pacific dogwood (Cornus nuttallii) |
| 7b | Dove tree (Davidia involucrata) |
| 7 | Sweet gum (Liquidambar styraciflua) Royal paulownia (Paulownia tomentosa) |
| 6b | Flowering dogwood (Cornus florida) |
| 6 | European beech (Fagus sylvatica) Tree of heaven (Ailanthus altissima) Redbud (Cercis canadensis) Goldenchain (Laburnum X watereri) |
| 5b | Horse-chestnut (Aesculus hippocastanum) |
| 5 | Norway maple (Acer platanoides) English oak (Quercus robur) |
| 4b | Yellowwood (Cladrastis lutea) Scotch elm (Ulmus glabra) |
| 4 | Maidenhair tree (Ginkgo biloba) Black locust (Robinia pseudoacacia) |
| 3b | Black walnut (Juglans nigra) |
| 3 | Littleleaf linden (Tilia cordata) |
| 2b | Ohio buckeye (Aesculus glabra) Hackberry (Celtis occidentalis) White ash (Fraxinus americana) |
| 2 | European birch (Betula verrucosa) American elm (Ulmus americana) |
| 1b | Laurel willow (Salix pentandra) |
| 1 | White spruce (Picea glauca) |
Source: Plant Hardiness Zones in Canada map, 1991