4 6 



TREES AS GOOD CITIZENS 





PIN OAK. 





in the fall. It largely escaped injury in New England 

 in the severe sleet storm of November 1921 that was 

 so destructive to the Elms, Maples and other orna- 

 mental trees. The city of Washington has used the Red 

 Oak on stretches of street, with results that are not 

 excelled on any thoroughfare in the city, as has also 

 Atlanta, Georgia. 



Pin Oak. Among the Oaks, first choice for street 

 planting is usually, though undeservedly, given the Pin 



Oak, so named in allusion to 

 the dead twigs, which re- 

 semble pins driven into the 

 trunk. With fair soil this 

 tree grows well in small area, 

 and it yields to pruning in a 

 way that makes it possible 

 for the tree to be kept of 

 relatively small size or be al- 

 lowed to attain considerable 

 development. Where the 

 root area is restricted, pruning will check expansion 

 of the top and hold crown and root system in the 

 harmonious relationship needed for best results. The 

 Broadway roof of the New York subway, far uptown, 

 shows these trees, growing in shallow soil and pruned 

 into formal shape with excellent effect. The Pin 

 Oak has upright trunk and its crown is a natural 

 pyramid, with young slender horizontal branches, nor- 

 mally of formal outline and fine foliage. Either pruned, 

 or permitted to follow its full development, the tree is 

 highly desirable for street purposes. It has few enemies 

 and these are easily controlled. The autumn foliage is 

 a deep scarlet and extremely attractive, but the dead 

 leaves hang on most of the winter. 



