50 BULLETIN 816, U. S. DEPARTMENT OF AGRICULTURE. 
and the loosened roots as about the roots of trees without balls. 
Trees planted with balls need no root pruning and little top pruning. 
PRUNING. 
At planting time the trees should be so pruned as to remove from 
one-half to three-fourths of the leaf buds. The head should be 
formed in the nursery, so that at planting time the only problem is 
how to reduce the amount of prospective growth the first season 
Ye PGs Big Pac 
P20367HP P20368HP 
Fic. 34—A pin oak trimmed for planting. Fic. 35.—A sycamore trimmed for planting. Well 
Note the bad stubs (A, A) on the left-hand pruned, without bad stubs. 
side of the tree. 
without destroying the form of the head. Specific directions are 
difficult, because different species of trees are so different in their 
character of growth. A species that is naturally compact in growth 
(fig. 34) should be pruned by removing whole branches rather than 
by having the ends of branches removed. One that is open and 
spreading (fig. 35) will probably need the shortening of the longer 
limbs as well as the removal of interior branches. The first pruning 
