1 66 ROCK GARDENS 



it is only these difficult and tantalising higher 

 alpines, such as the Androsaces, Gentians, some 

 of the Campanulas, and a few others, that 

 demand so much care. But there is, and 

 always will be, a certain fascination in trying to 

 grow those kinds that others have failed with, 

 and with every new treatment tried there is 

 always the hope that the secret of success has 

 been found. Moreover, so many of these 

 perverse plants are so typically Alpine that no 

 rock garden worthy to be called by that name 

 is complete without them. 



But the numbers of other plants are countless, 

 and amongst them are some of the most attrac- 

 tive, which will need little attention, but will 

 increase and multiply as freely as weeds, 

 provided there is good light soil and plenty 

 of it, sufficient and ample drainage, as well 

 as plenty of light and pure air. 



Some plants, such as varieties of the Andro- 

 saces, Campanula lanata^ and others, so dislike 

 much damp lying on their leaves and about their 

 crowns that they should at all seasons of the 

 year be protected from moisture from overhead. 

 Therefore plant them under an overhanging 



