1 82 TREES AS GOOD CITIZENS 



brown globular growths known as cedar apples. Treat- 

 ment is not always necessary, but when it is needed, 

 Bordeaux mixture should be applied before the leaves 

 open in the spring, and several times during July and 

 August, at two to four week intervals. Removal of the 

 "apples" from Cedars in the early spring is advisable, 

 especially if they are near apple trees, as the cedar apples 

 can readily produce rust on apple trees. 



Leaf scorch is an ailment which causes young leaves 

 and tender shoots to wither and die. It is apt to make its 

 appearance during a dry, hot spell, following a damp 

 spring. Many varieties of trees are affected, but Maples 

 seem to suffer most. Helpful treatment may be given by 

 keeping the soil well watered and freely cultivated when 

 the dry season comes, so that moisture and air may reach 

 the root system for the thorough nourishing of the tree. 



Poor soil conditions are the cause of many ailments of 

 street shade trees. A common manifestation of trouble 

 of this nature is known as stag-head or top-dry, which 

 results in slow death of the top, producing an effect sug- 

 gesting the bare horns of a stag. This is apt to indicate 

 lack of water or suffocation of the roots. Enrichment of 

 the soil, a plentiful supply of water and frequent loosening 

 of the soil by cultivation, are necessary to bring about 

 recovery of an affected tree. 



