48 THE APPLE 



The trees — how to plant. In California and other extreme 

 Western states it has been found that species of the following 

 trees are the ones to be especially recommended for windbreak 

 purposes : 



Eucalyptus Monterey pine 



Schinus Locust 



Monterey cypress Maple 



In some sections of these states the larger-growing deciduous 

 fruit trees, such as the following, have been used with good 

 results : 



Fig Chestnut 



Apricot (seedling) Walnut 



Almond (seedling) 



In the prairie, or plain, region other trees seem to be more 

 desirable than those used farther west. The cottonwood, the Nor- 

 way poplar, and the Carolina poplar are often used where quick 

 growth is required. However, these trees, because of their open 

 growth, are short-lived when planted thickly, and of but little value 

 if planted otherwise. Certain strains of the balm of Gilead are 

 more satisfactory, as they are not only quick growers but more 

 dense as to limbs and foliage. 



The box elder is very hardy and makes a dense, heavy growth. 

 It is a rapid-growing tree while young, but is short-lived and 

 therefore generally used with the elm or the ash. 



The silver, or soft, maple makes a rapid, heavy growth, and its 

 lower branches keep vigorous and healthy. With a favorable 

 environment and a reasonable amount of soil moisture, it attains 

 good size and long life. 



The oleaster, or, as it is more commonly known, the Russian 

 wild olive, is particularly valuable on poor, dry soils or on alkaline 

 soil. It is, however, comparatively short-lived, especially the top, 

 and never grows to very large size. Its value lies in its adaptability 

 to difficult locations and in its thorny character, which makes it 

 a good stock fence or hedge. 



The green ash has a dense, heavy top, attains fair size, and 

 is somewhat cosmopolitan as to soils, thus making it desirable for 

 combination with other trees. 



