438 



AMERICAN FORESTRY 



LOOKING ACROSS ONE YEAR'S GROVE TOWARDS FARM 

 BUILDINGS, SAN DIEGO, CAL., MUNICIPAL FOREST. 



and the trees, which are about one foot 

 in height, set into the ground about 

 four inches so as to be well into the 

 moist earth. No water is used in the 

 planting, and none afterward. After 

 the trees are planted they are cultivated 

 until a thorough dust mulch is estab- 

 lished. This requires about five culti- 

 vations extending up into June when 

 no more care is necessary until the 

 rains of the next winter. In the fol- 

 lowing spring a mulch is again formed 

 by stirring up the ground between the 

 trees. After one year's growth many 

 of the trees are ten feet in height with 

 a diameter at the base of fully two 

 inches. Trees set upon the same soil 

 without cultivation have not equalled 

 this growth in two years' time. 



After the first year's planting was 

 completed a nursery was established 

 with a capacity of several hundred 

 thousand trees a year for carrying on 

 the work. The trees grown for the 

 1912 planting included about seven 

 species of Eucalyptus and a few species 

 of Acacias ; numerous ornamental trees 

 were also propagated for use along the 

 drives and boulevards. Among these 

 were a few thousand of the Torrey 

 Pines (Pinus Torreyana), which were 

 grown for enlarging the grove of these 

 trees which is located upon the city 

 land. With the exception of a few 

 trees found upon one of the coast 

 islands these are the only trees of this 

 species in existence. About two hun- 

 dred and fifty acres have been planted 



