I02 ROCK GARDENS 



will give different degrees of moisture, which 

 will be found most useful, for all plants do not 

 need the same amount. In the hollows can be 

 planted those kinds that require a wet soil, 

 while the higher-lying ground can be reserved 

 for those preferring a drier position. If desired, 

 a pool here and there can be made, and a very 

 charming and attractive addition to the garden 

 these will be, if judiciously placed. They can 

 be made of either concrete or yellow clay. In 

 either case it will be necessary to edge these 

 patches of water with stones or plants, in order 

 to avoid the possibility of any formal outline, 

 and, needless to say, all concrete must be carefully 

 hidden from view. 



Should the garden be of any considerable 

 size, it will not be feasible to fill it up with any 

 specially prepared compost, such as was recom- 

 mended for the smaller bog beds ; nor indeed is 

 it necessary, for the majority of bog plants, and 

 certainly the coarser-growing ones, are quite 

 happy in any cool, rich, and moist soil ; but in 

 places the ground should be prepared for those 

 which are more delicate or fastidious in their 

 tastes. These spots may be of peat or other 



