ELEMENTS OF LANDSCAPE DESIGN 17 



Horticulture may be divided into (two classes, 

 the economic and the decorative. The decorative 

 aspect is of cliief importance to the landscape-de- 

 signer,^as the economic side appears only in such 

 problems as the disposition of orchards and the 

 screenmg of objectionable features. This last 

 consideration is nevertheless of as much impor- 

 tance as the first, and is as much a question of es- 

 thetics as of economics. 



The ornamental side of horticulture deals with 

 all the plant materials used in landscape-garden- 

 ing. The horticulturist groups these according 

 to methods of growth, and classifies them according 

 to size and soil requirements; but the landscape- 

 architect primarilj^ considers them with regard to 

 form and color. (Horticulture gives the land- 

 scape-architect the majority of the materials wdth 

 which he has to work, for he is generally called in 

 where planting is to predominate, and he must ac- 

 cordingly be thoroughly familiar with it.J 



ENGINEEEING 



^Engineering in landscape problems concerns 

 the lay of the land, the alteration of grades, the 

 construction of topographical work, drainage, and 

 the building of walks, bridges, and drives.j Be- 



