BEAUTIFUL WALLS AND FENCES 281 



variety should select Raegneriana, which has heart-shaped foliage. 

 Any one of the three named (including the common) will cover a 

 large area more quickly than the small variegated-leaved sorts; 

 but these are extremely beautiful, and any person who is not in a 

 desperate hurry to get his walls covered, 

 but takes pleasure in watching steady 

 development, should grow one or two of 

 them. Rhombea and variegata are two 

 of the best ; they have green leaves with 

 white margins. 



There is another aspect of wall gar- 

 dening than that of covering house walls 

 with creepers, and it is to establish 

 dwarf plants in the face, or on the top, 

 of low walls. Some enthusiastic flower- 

 lovers go so far as to drive long spike 

 nails into the face of such walls, in 

 order to provide partial support for small 

 rockery stones, which are then cemented 

 on. By adopting this plan quite a 

 charming effect can be produced. If 

 stones with a hollow upper surface are selected, they will hold 

 enough soil to keep such plants as Sempervivums, Sedums, Saxi- 

 frages, Campanulas, Arenaria (Sandwort), Arabises, Aubrietias, 

 Dwarf Phloxes, Iberis gibraltarica (perennial Candytuft), and 

 Cheddar Pinks flourishing. Nor must the Wallflowers and Snap- 

 dragons be overlooked ; they are natural wall plants. 



FORMING POCKETS ON THK FACB 

 OF WALLS 



A shows pockets on the face of a wall ; 

 B shows section of wall with brick 

 or stone so built in as to form a plat- 

 form for pocket C to rest on. The 

 pocket is held securely to the wall by 

 means of a nail driven into a wooden 

 plug as shown. C shows end or side 

 face of pocket 



19 



