THE NATURAL ROCK GARDEN 37 



preparation of natural rockwork are first to 

 ensure thorough and efficient drainage of every 

 pocket, and next to provide space sufficient to 

 give that depth of soil all rock plants so 

 urgently require. 



Great care should also be taken, when 

 putting soil into the pockets and crevices, to 

 work it thoroughly into every corner, so that 

 there is no possibility of leaving any air space, 

 which so often proves fatal to plants. With 

 regard to the soil required, full particulars 

 will be found in Chapter VI. 



