TEEATMENT OF PEKENNIALS 37 



is easy to make fresh plants by breaking off pieces, 

 and planting them in a shady place. 



Aubretia. The pretty low-growing Aubretias 

 flower about the same time as the last-named 

 flower ; the mauve and purple shades are prettier 

 than the red ; the best dark purple is A. Dr. Mules. 

 You can raise them from seed, but they do not all 

 come true, so the best way is to increase by layers. 

 To do this, cover them thinly with earth, when the 

 best of their flowering is over ; the young shoots 

 will soon come through, and root themselves, after 

 which they can be carefully divided from the old 

 plant, and be put out in a shady corner to grow 

 into good plants. Aubretias prefer growing on a 

 rockery, or on a stone wall, as their roots require 

 lime, and the flowers look their best when hanging 

 down. 



Campanula. There are so many, and such 

 different varieties of Campanulas, but those I have 

 found most useful are C. muralis (or porten- 

 schlagiana), about six inches high, covered with 

 lilac flowers in June grows best on a bank or 

 rockery ; increased by division. 



C.persicifolia, white or blue, will grow anywhere, 

 but likes shade in which it sows itself freely, and 



