CAMPANULAS 43 



in the spring. These cuttings will make good flowering 

 plants the same year, if they are stuck in cold frames. 

 But the simpler plan is to raise seedlings, and these, 

 if seed is sown in March or April in a cold frame, will 

 also flower the same year. Hundreds of plants can 

 be quickly raised in this way at the cost of a few pence, 

 and plants raised from seed are the most vigorous. 

 The white variety often comes true from seed. C. 

 caespitosa makes a particularly beautiful contrast 

 with Sedum album, which flowers at the same time. 



Scarcely less well known, and quite as beautiful, 

 is Campanula muralis (also called Portenschlagiana) . 

 This plant, although it will grow in the smallest fis- 

 sures of rock in the hottest sun, will also thrive in 

 rich soil in cool and half shady places. There are 

 two varieties and their naming is rather uncertain. 

 The type appears to be the smaller plant with pale 

 blue flowers, while the variety Bayarica is larger and 

 has deeper and more purple flowers. Both are most 

 valuable plants for the rock garden, particularly for 

 the north side, where they may be mixed with Silene 

 alpestris with beautiful effect. They are very deep- 

 rooting plants and should be left undisturbed as long 

 as possible. They can be increased either by division 

 or by cuttings treated like the cuttings of C. caespitosa. 

 Seed is not very common, and there is, unfortunately, 

 no white variety known. 



Campanula pulla is a plant with much the same 

 habit of growth as C. caespitosa, but even smaller, 

 and with deeper blue, or rather purple, flowers. It is 



