40-i 



AMERICAN FORESTRY 



A STREET LINED WITH FINE OAKS. 



lows the tree to assume its natural 

 spread and maintain its individuality. 

 By crowding, the individual tree be- 

 comes unsymmetrical, and if one were 

 to isolate such a tree from its neigh- 

 bors, it would present a most unsightly 

 appearance. It is unnecessary to sacri- 

 fice beauty for shade ; it is possible to 

 have both beauty and shade. But it 

 will be necessary to sacrifice temporary 

 effects and speed, if we are to have 

 beautiful streets. 



There is a large list of ornamental 

 trees suitable for lawns and parks in 

 the west, but there are very few suit- 

 able for the street. For example, ever- 

 greens, weeping birches, and Bechtel's 

 flowering crab are well adapted to the 

 lawn but are ridiculously out of place 

 on the street parking. I bear in mind a 

 row of Colorado Blue Spruce planted 



as a street tree. Trees for street plant- 

 ing may be divided into two groups : 

 those to be used for permanent effects 

 long-lived, slow-growing species ; and 

 those which produce quick, temporary 

 shade and are usually short-lived. The 

 latter are valuable for use in alternating 

 with those of the first group. 



For western planting, in the first 

 group may be placed American elm, 

 cork elm, American linden, Norway 

 maple, hard or sugar maple, green ash, 

 and hackberry. American elm is the 

 most satisfactory. Here it will reach a 

 diameter, breast high, of about eight 

 inches in fifteen years. It is adapted to 

 wide streets and should be planted not 

 less than forty feet apart. American 

 linden is rarely found on western 

 streets, but it is a tree that can be rec- 

 ommended for this region. It 



is a 



