. Bulletin of the Department of Agriculture. Agriculture; Agriculture. STREET TREES. 31 Although the sycamore mai)le ' is similar in appearance to the Norway maple, it is not a satisfactory street tree in the eastern United States. It succeeds, however, ii^ regions 1, 2, 3, and 4. Of the trees used for street planting the oaks are best. They probal)ly 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
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. STREET TREES. 31 Although the sycamore mai)le ' is similar in appearance to the Norway maple, it is not a satisfactory street tree in the eastern United States. It succeeds, however, ii^ regions 1, 2, 3, and 4. Of the trees used for street planting the oaks are best. They probal)ly 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 in shape are 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, whUe 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 subject to attacks of 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. It is 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. P16662HP Fig. 22.—a sugar maple (on the left) and a white oak (on the right), each 32 years old and nearly the same size. 1 Acer pseudoplatanus L. 2 Quercus agrifnlia Nee. 3 Quercus montana Willd. (formerly Q. prinus). i Quercus laurifotia P
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