The Wall Garden 49 



viceable. Behind the wall, at the top, a 

 strip of earth should be left and there a 

 wider variety of plants can be grown. 

 Single Marguerite carnations and grass 

 pinks will form a sort of cascade of fo- 

 liage and bloom there if planted close to 

 the wall or in the crevices of the top, and 

 a similar effect, but much bolder, can be 

 created with the perennial pea (Lathyrus 

 latifolius). 



If the dry wall is already made, the 

 crevices can be plugged with soil if care 

 and patience are used. Even a cemented 

 wall is not hopeless; here and there the 

 mortar can be chiseled out and an occa- 

 sional small stone should be removed. 



A wall garden has these advantages 

 over a rock garden ; it is more easily con- 

 structed, it is of practical use, and it is 

 sometimes a possibility where the other is 

 not. 



