192 ROCK GARDENS 



boldly, covering the rocks and all the surface 

 of the ground. The fully matured rock garden 

 should have no untenanted spot, nor in summer 

 show any bare spaces. Therefore, mass ; 

 but it must be left to individual taste and 

 circumstances to decide how to obtain the best 

 effects from the material at hand. 



With regard to what are the best species to 

 plant together, colour and time of flowering 

 will have especially to be considered, provided 

 always that the aspect suits both species equally 

 well. 



It is not advisable to devote too large a 

 space to plants of the same flowering season, 

 for though the result during that period may 

 be pleasing, it will be apt to make rather a 

 blot on the general effect when their bloom is 

 over. So I prefer to mix the plants in such 

 a way that from April to September there will 

 be no part of the garden quite devoid of bloom, 

 though, as might be expected, the garden will 

 be much gayer at some times of the year than 

 at others. 



Another point to look to, and one often 

 rather liable to be forgotten, is that no very 



