Apr
06
Plant Hardiness Zones
by Dustin Blewett
What are Hardiness Zones?
The
Plant Hardiness Zones divide the United States and Canada into 11 areas
based on a 10 degree Fahrenheit difference in the average annual
minimum temperature. (The United States falls within Zones 2 through
10). For example, the lowest average temperature in Zone 2 is -50 to
-40 degrees Fahrenheit, while the minimum average temperature in zone
10
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