STREET TREES. 



15 



Narrow streets should bo planted with cohimnar trees (fig. 14) 

 or sometimes with small trees. Broad streets may be planted with 

 spreading trees (figs. 3 

 ami 16), or, if pro- 

 vided with a central 

 parking space, with 

 moderate - sized trees 

 in the center and on 

 the sides, or with trees 

 on the sides suited to 

 the space and formal 

 trees in the center. 

 (Fig. 15.) 



As a rule, trees na- 

 tive to the locality 

 that have been suc- 

 cessfully grown in 

 other cities should be 

 given the preference. 

 When a choice must 

 be made between un- 

 tried native trees and 

 those tested in a city 

 or town under differ- 

 ent soil or climatic t,,^ i. .t ■ ,,* * /t ,, ^ , x p'^^sbhp 



Fig. 14.— Narrow upright trees (Lombardy poplars) on a narrow 

 conditions, it is better street. Washington, D.C; midsummer. 



to give the native trees 

 the first trial. There 

 are many native trees 

 that are promising 

 which have not been 

 planted on a sufficient 

 scale or under suffi- 

 ciently varied condi- 

 tions to demonstrate 

 their real value for 

 street planting over 

 any considerable area. 

 Many of the trees men- 

 tioned in this bulletin 

 may j)rove valuable 

 far beyond the areas 

 for which they are sug- 

 gested. The burr oak, 

 the swamp white oak, the scarlet oak, the chestnut oak, the white 

 oak, the soiu- gum, and others may be found on further trial to be as 



PI 8855 HP 



Fig. 15. — Formal trees in a central parking, but appropriate trees 

 wanting on the sides of the street. Canary Island date palms in 

 Merced, Calif.; midsummer. 



