20 



BLUE SPRUCE, 



Blue spruce is native to the E.ocky Mountains. Owing to its rich 

 blue-colored foliage, it is a favorite tree for ornamental planting. It 

 is well adapted for use in windbreaks, and it can be grown under irri- 

 gation, both on the bottoms and uplands. 



Approved: 



James Wilson, 



Secretary of Agriculture^ 

 Washing-ton, D. C, June 15^ 1907, 



[Cir. 109] 



