8 



BULLETIN 816, U. S. DEPARTMENT OF AGRICULTURE. 



After a proper governing board is provided, the securing of a 

 competent executive is a matter of ordinary business procedure. 

 It is usually desirable that he shall be not only a good executive but 

 also a man with a knowledge of trees and trained in their care, so 

 that he may be a competent adviser of the board as well as its 



PLANNING FOR TREES ON CITY STREETS. 



With the help of one who knows trees and the local conditions to 

 be met, the town should be studied and a suitable kind of tree selected 



P18857HP 



Fig. 7.— Increased attractiveness due to trees on a city street, as shown by contrasting the two sides 

 of the thoroughfare. "If trees like red oaks, American elms, or the Eucalyptus in the distance had 

 been used, the effect on this wide street would have been comparable to figure 3. The trees in the 

 left foreground are umbrella trees. Merced, Calif.; midsummer. 



for each street or for a large portion of a street (figs. 1 and 3), and as 

 conditions warrant the plan should be carried out as outlined. Mixed 

 plantings of different sorts of trees (figs. 2 and 7) are not as pleasing 

 and effective as the use of a single species for considerable distances. 

 The use of only one or two kinds for a whole town is likely to be 

 monotonous, and it is also undesirable because the variety most used 

 may become subject to serious disease or insect attacks. The 

 species and varieties of trees suitable for city planting are few enough, 

 if all are used, so an endeavor should be made to include as many 

 different kinds as practicable, assigning one variety for a long stretch 

 of street unless there is a marked change in its character, in which 

 case a change of trees would be warranted. 



Where trees are already on a street, the problem, of planning for 

 the future is frequently much complicated, especially if there are 

 several kinds in good condition. Where there is but one good kind, 



