P STREET TREES. . aL 
Although the sycamore maple‘ is similar in appearance to the 
Norway maple, it is not a satisfactory street tree in the eastern 
United States. Jt succeeds, however, in regions 1, 2, 3, and 4. 
OAK. 
Of the trees used for street planting the oaks are best. They 
probably have not been more widely planted because of the preva- 
lent belief that they are slow growers and because in the North they 
are rather difficult to transplant. Although some of the hand- 
somest species, like the white oak and live oak, are slow growers, 
those suitable for street 
planting are compara- 
tively rapid growing. 
The white oak and su- 
gar maple shown in fig- 
ure 22 are each 32 years 
old and although dif- 
fering inshapeare prac- 
tically the same size, 
yet the sugar maple 
is considered a suffi- 
ciently rapid growing 
tree to be planted fre- 
quently as a street 
tree, while the white 
oak is seldom so used. 
The oaks are hardy, 
most of them are long 
lived, and for the most 
part they are free from 
disease and insect at- 
tacks. Some of the 
southern species are P15662HP 
subj ect to attacks of Fig. 22.—A sugar maple (on the left) and a white oak (on the right), 
each 32 years old and nearly the same size. 
mistletoe. 
The California live oak ? is an evergreen suitable for use in region 2 
and succeeds adjacent to the ocean. It is also useful in region 3 
and in the western part of region 5. It is easily transplanted if 
handled young, and especially so when planted from pots. 
The chestnut oak * is a native of gravelly soils on eastern moun- 
tains and is suitable for gravelly soils in suburban locations in 
regions 9,10, and 11. Itis a large, handsome tree. 
The Darlington oak‘ is a form of laurel oak especially desirable 
for street planting. It is large, round headed; the leaves are a trifle 
1 Acer pseudoplatanus L. 3 Quercus montana Willd. (formerly Q. prinus). 
2 Quercus agrifolia Nee. 4 Quercus laurifolia Michx. 
