254 



Gardens for Small Country Houses. 



of rich compost behind 

 the rock face. Fig. 384 

 shows the charming effect 

 of roughly - hewn rocky 

 steps leading down through 

 such a wall from the 

 terrace to the rock garden. 

 Such, steps should not be 

 allowed to become over- 

 grown with herbage, 

 though small fry, like 

 Erinus alpinus, lonopsi- 

 dium acaule and Linaria 

 alpina, may be suffered 

 to grow in the interstices. 

 In the small bog garden 

 one must carefully avoid 

 such vigorous growers as 

 Gunnera, Rodgersia, 

 Saxifraga peltata and all 

 those plants which appear 

 in catalogues under the 

 heading " Bog and Water- 

 side Plants." The bog 

 should be devoted to 

 Primulas rosea, cock- 

 burniana, farinosa, 

 frondosa, japonica, 

 pulverulenta, c a p i t a t a , 

 denticulata, Sieboldii ; to 

 shortias, terrestrial orchids, 

 the choicer t r o 1 1 i u s e s , 

 dodecatheons and 

 mertensias. 

 The soil must be spongy and constantly moist, but at the same time well drained, 



for nothing worth growing will endure stagnant moisture. A few large, flat slabs 



of stone on the surface will be of great value in 



bog without injury to the 



plants. Fig. 383 shows INLET PIPE 



cypripediums thoroughly 



at home upon the upper 



margin of a bog garden. 



A moraine garden is 



troublesome to construct, 



but repays the trouble. 



The essentials are very 



sharp drainage and abund- 

 ance of moisture in dry 



weather. Unless the supply 



of water is very limited, 



FIG. 384. ROCK STEPS LEADING FROM TERRACE THROUGH ROCK 

 WALL TO ROCK GARDEN. 



affording 



A few large, 

 access to all parts of the 



GRANITE CHIP5 SAN 

 'AND LEAF MOULD 



FIG. 385. CONSTRUCTION OF SMALL MORAINE. 



