Plant Hardiness Zones
A zone map is a general guideline of the “average” lowest and highest temperatures for a particular zone. It’s important to note that it is just a guideline. Zonal maps help gardeners identify what types of plants will survive their local winter conditions. This applies more to perennials and woody plants than to vegetables or annuals.
The warmer the climate, the higher the number of the zone. The lower the zone number, the colder the zone is and the shorter the growing season will be. With a shorter growing season, more focus should be on choosing the right plants and vegetables for success in your region. Remember, microclimates can exist in a particular area. A microclimate is a small area within a climate zone where the climate is slightly different from the predicted zones.
To determine your Plant Hardiness Zone, identify the coldest temperature or minimum winter temperature in your local area.
Zone 1; -45°C (-49°F)
Zone 2: -45 to -40°C (-49 to -40°F)
Zone 3: -40 to -35°C (-40 to -31°F)
Zone 4: -35 to -29°C (-31 to -20°F)
Zone 5: -29 to-23°C (-20 to -9°F)
Zone 6: -23 to -18°C (-9 to -1°F)
Zone 7: -18 to -12°C (-1 to 10°F)
Zone 8: -12 to -7°C (10 to 19°F)
Zone 9: -7 to -1°C (19 to 30°F)