THE LIMITS OF THE 
| AVERAGE ANNUAL MINIMUM [| 
_| TEMPERATURES FOR EACH ZONE | 
Zonet {nNorthern Canada. | 
: ee | Zone 2-50° to -35 EE | 
HARDINESS MAP . _. | Zone 3-35° to -20° memes | 
: : Zone 4 -20° to -10° Baw 
These zones are based on average annual minimum . ee : Zone 5 -10° to - 5° ames | 
temperatures as listed by the U. $8. Weather Bureau te oe : - | Zone 6 ~5° to = : | 
for the years 1895-1935 and published in the Atlas go : . =} gore? 5 to | 
of American Agriculture, U.S. D. A.,Washington, 1936 _ oe — . oS : oe : | 
: : |. ee + Zone 2 
Zone t0 30° to 
HOW TO USE THIS MAP : 
From it determine what zbpne you are in. Every item 
carrying your zone number or a smaller number should 
be hardy with you. If you want to gamble on those rated 
one zone greater, there is atleast a chance for success 
but two zones greater will probably be hopeless. 
For full explanation of the entire system see Page I. 
