198 HOME AND GARDEN 



B. canina and B. arvense, grow in our hedges, but 

 only sparingly in comparison with their abundance 

 in chalk or clay lands. But happily, with a moderate 

 preparation, we can enjoy the beauty of the free- 

 rambhng Cluster Roses and some of the species, 

 notably B. polyantha, which is easily grown to a 

 very large size. 



Some of the low-growing Cruciferm are quite 

 happy in poor ground, such as Aubrietia, Arabis, 

 Cerastium, and Alyssum. All these are at their 

 best in banks and loose rock walls, either in sun 

 or shade, where they can either trail or hang over 

 in sheets of pretty leaf and bloom; and with them 

 should be some of the hybrid Rock-Pinks, at home 

 in the same places and willingly growing in the 

 same manner. 



