U. S. DEPARTMENT OF AGRICULTURE 



PLANT HARDINESS ZONE MAP 



AGRICULTURAL RESEARCH SERVICE 



APPROXIMATE RANGE OF 

 AVERAGE ANNUAL MINIMUM TEMPERATURES 



ZONE 



Below -50° F. 



-50° to -40' 



-40" to -30° 



-30° to -20° 



-20° to -10° 



-10° to 0° 



0°to 10° 



10° to 20° 



20° to 30° 



30° to 40° 





2a 



2b 





3a 



3b 





4a 



4b 





5a 



5b 





6a 



6b 





7a 



7b 





8a i 



8 b j 





9a 



9b ! 





lOa ! 



lOb : 



See reverse side for instructions on how to use tiiis map. 



Approximate Scale 1 = 7 500 000 



100 200 300 400 



500 Miles 



