Hardiness Zones for Alberta, Canada
Answered by: Inge Poot
Question from: Jennifer Milmine
Posted on: January 17, 1999

I was wondering if you could let me know what the zones are, especially what zones are in Alberta.

The hardiness zones refer to the approximate range of average annual minimum temperatures that are experienced in a particular area. The average annual minimum temperatures for the 10 USDA zones are:

Zone 1: below minus 50 degrees Fahrenheit.

Zone 2: minus 50 to minus 40 degrees Fahrenheit.

Zone 3: minus 40 to minus 30 degrees Fahrenheit.

Zone 4: minus 30 to minus 20 degrees Fahrenheit.

Zone 5: minus 20 to minus 10 degrees Fahrenheit.

Zone 6: minus 10 to 0 degrees Fahrenheit.

Zone 7: 0 to 10 degrees Fahrenheit.

Zone 8: 20 to 30 degrees Fahrenheit.

Zone 9: 20 to 30 degrees Fahrenheit.

Zone 10:30 to 40 degrees Fahrenheit.

In Alberta, Canada, northern Alberta has zone 1, central zone 2, southern zone 3. There is a narrow strip of zone 4 at the south and a narrow strip along the west with zone 1.

There is a Canadian hardiness zone system that offers more precision, but most North Americans use the USDA system when referring to hardiness zones.

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