PRUNING 
The Pruning of trees and 
Ve tne subsequent treatment 
Yk-of wounds is probably the 
most important of all tree 
maintenance practices. Pro- 
per and systematic pruning 
helps trees to better with- 
Stand adverse environment- 
al conditions. In addition, 
properly pruned trees re- 
quire less fertilizing, brac- 
ing, and spray materials to 
keep them healthy. Correct wound treatment will 
reduce losses due to wood-decay fungi. The two 
practices are so closely related that they must be 
considered together. 
Trees are pruned principally to preserve 
their health and appearance, and to prevent 
damage to life and property. 
PRUNING FOR HEALTH 
Broken, dead, or diseased branches are pruned 
to prevent decay-producing fungi from penetrating 
into the part of the tree to which these branches 
are attached. Live branches are removed to permit 
penetration of sunlight and circulation of air 
through the canopy or to compensate for loss of 
roots. Overlapping branches and those that inter- 
fere with utility wires are removed to prevent rub- 
bing and eventual decay. Branch stubs are removed 
to promote proper healing. The removal of many 
small branches rather than a few large ones not 
only reduces the amount of sunscald, but also makes 
the work less conspicuous and facilitates maintain- 
ing the desired shape. 
PRUNING FOR APPEARANCE 
An appreciation of landscape values and some 
idea of the normal form of the tree being pruned 
are essential for success in pruning trees. 

PRUNING FOR 
SAFETY 
Dead, split, and broken 
branches are a_ constant 
hazard jo life and property. 
Danger from falling limbs 
is always greatest in trees 
along city streets and in 
public parks. 

ease PIONEER PRINTING CO. 
