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Zone 1 







HARDINESS MAP . 
These zones are based on average annual minimum 







_ temperatures as listed by the U. S. Weather Bureau Zone 6 
for the years 1895-1935 and published in the Atlas Zone ? 
of American Agriculture, U.S.D. A.,Washington, 1936 — : 
i L0ne 
: é Zone 10 



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 |}. 

THE LIMITS OF THE 
AVERAGE ANNUAL MINIMUM 
TEMPERATURES FOR EACH ZONE 

tn Northern Canada 
=5° to 
5° to 
10° to 
20° to 
30° to 
Zone 250° to -35 
Zone 3 ~38° to -20° 
Zone 4 -20° to -|0° GSES 
Zone 5-10? to - 5° Smee 




