l68 GARDEN PLANNING 



the gravel floor of the rock garden may be laid 

 in the way directed for path making. 



I need hardly warn the reader against the 

 use of water-worn rock pieces which have a 

 uniform pebble-like shape. I have seen them 

 used, but only with grotesque effect. On the 

 other hand, a few rounded pebbles introduced 

 along the margin of the rock structure are not 

 out of place, suggesting, as they do, an old 

 water-course, and serving to retain soil washed 

 down from the higher levels. 



Planting Autumn is the time for planting, 

 and no special directions are needed for the 

 practical work of putting the plants into the 

 soil. It should be done in the same way as 

 when planting a bed or border. The mode of 

 construction I have described ensures that there 

 is ample depth of soil. 



Discrimination should be used in selecting 

 the plants for special positions. The smaller 

 subjects like sedum, saxifrage, and semper- 

 vivum will thrive when rooted in crannies, 

 and some on the porous surface of the rock 

 itself, as witness the common house-leek. A 

 few of these plants may be established at the 

 margin of the rockwork and allowed to 



