SELECTION OF TREES FOR PLANTING 57 



although its vigor enables it to adapt itself to less favor- 

 able conditions. It is difficult to transplant near the 

 limits of its successful cultivation. In regions where the 

 ground freezes in the winter it would best be moved only 

 in very early spring. Its roots are particularly tender 

 and susceptible to drying out, like Magnolias and the 

 Tulip tree. Where practicable, it may be moved with a 

 ball of earth; but as it does especially well on light soils 

 near the coast, this is fre- 

 quently impracticable and 

 unnecessary. 



White Ash. Though not 

 so much used as some other 

 trees, the White Ash has fine 

 possibilities as a street shade 

 tree. Its comparatively light 

 foliage makes it especially 

 desirable for streets, as the 

 open crown permits the pas- 

 sage of sunlight and free circulation of air. The tree de- 

 velops a round, graceful top and it grows fairly rapidly. 

 Rich soil and moisture are required, but under favorable 

 conditions it is thrifty and hardy. It is rather subject to 



attacks of oyster shell scale 

 and leopard moth. The chief 

 drawback is its short sea- 

 son of foliage, being similar 

 to the American Elm in 

 this respect. 



Green Ash. Though of 

 smaller growth than the 

 White Ash, the Green Ash is 

 much used in western cities 

 and has a distinct place in 



