> LIBRARY , 



ONLY vigorous trees that will withstand the ad- 

 verse conditions of a city should be planted on 

 its streets. 



The habit of growth should be suited to the width 

 of the street, and the foliage should be of a pleasing 

 texture. 



Trees that bear showy flowers, fruits, or nuts are 

 usually not desirable for street planting. Some trees 

 are also objectionable because their roots penetrate 

 defective sewers; others because they have a tend- 

 ency to heave sidewalks. 



Oaks are probably more generally satisfactory for 

 street planting than any other group of trees, fol- 

 lowed closely by elms and sycamores. 



Palms do not make good shade trees, though some- 

 times appropriate for formal effects. The silver and 

 ash-leaved maples and the poplars are not often 

 satisfactory. 



This bulletin describes the principal trees that are 

 used for street planting in the United States. 



Contribution from the Bureau of Plant Industry 



WM. A. TAYLOR, Chief 

 Washington, D. C. March, 1922 



