1 6 ROCK GARDENS 



and west, but this is not so important provided 

 that its course winds sufficiently. The more 

 it winds the better, for it then provides the 

 greatest variety of aspects and sheltered and 

 shady nooks, the advantage of which will be 

 duly appreciated when the time comes for 

 planting. It will also be beneficial if the 

 bottom of the valley slopes gradually from 

 one end to the other, thereby ensuring more 

 efficient drainage. A stream down the centre, 

 when it can be obtained, greatly enhances the 

 charm and considerably enlarges the scope 

 for variety in plants that can be cultivated, 

 because those preferring moisture can be 

 planted on its banks, and those requiring a dry 

 soil will find a home on the heights above. 



The cliff type, as the name implies, is of 

 abrupt formation, rising from comparatively 

 level ground, and is one of the best and most 

 effisctive forms, provided the aspect is suitable. 

 South-south-east is the best, but any other 

 point will do so long as it does not face towards 

 the north, for with a northern aspect the 

 garden would get but little sun, certainly not 

 the amount all alpines so imperatively require, 



