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Winnipeg O Sioux Lookout 
gouthomrn 
torornsg or 2 
THE LIMITS OF THE 
AVERAGE ANNUAL MINIMUM 
TEMPERATURES FOR EACH ZONE 
Zone t_ {n Northern. Canada 
: Zone 2-50° te -35 
HARDINESS MAP . oa Zone 3 -35° to -20° 
: Zone 4 -20° to -{0° GEES 
These zones are based on average annual minimum - rs Zone 5-10? to - 5° aaa 
temperatures as listed by the U.S. Weather Bureau ; -. Zone 6 -5° to a 
for the years 1895-1935 and published in the Atlas f Zone ? 
of American Agriculture, U.S.D.A.,Washington, 1936 ; ern : Zone : 
‘ Zone 
: Zone 10 30° to 
HOW TO USE THIS MAP 
From it determine what zone you are in. Every item 
carrying your zone number or asmaller number should 
be hardy with you. If you want to gamble on those rated 
one zone greater, there is at least a chance for success 
but two zones greater will probably be hopeless. 
For full explanation of the entire system see Page I. 
