14 



Farmers' Bulletin 1123. 



Thinnings are usually necessary by the time a plantation reaches 

 the age of 20 years, sometimes sooner. Thinning may be done at 

 odd times by the owner of the plantation at no other cost than his 

 labor. Care should be exercised that the openings in the crown 



FIG. 8. Cotton wood plantation, 12 years old. Trees 8 inches in diameter, 50 feet in height. 



Faribault County, Minn. 



cover of the stand made by removing trees are no larger than may 

 be closed in from three to five years by the growth of the remaining 

 tree tops. When poles are cut for some farm use, a crude form of 

 thinning may be secured by a little care in the selection of trees 

 with a view to the betterment of the stand. 



