138 ROCK GARDENING FOR AMATEURS 



D. superbus (Fringed Pink). In its several distinct 

 varieties this is an interesting Pink, its fragrance and 

 deeply fringed flowers rendering it a favourite. It is, how- 

 ever, short-lived, and should be raised almost yearly from 

 seeds. It is widely distributed, being found in Europe 

 and Asia. The flowers vary from almost white to pink 

 or rose. Best on the rockery in a sunny, but not too 

 dry place. 



D. zonatus (Zoned Pink). This is quite an easy sort, 

 bearing rose blooms, having a deeper zone of colour. 

 The plant is free-growing. 



Other easy Pinks are D. squarrosus, D. noeanus, 

 D. fimbriatus, D. Requieni, D. Seguieri, D. Simsii, and 

 D. Sternbergi. 



THE MORE DIFFICULT PINKS 



Some gardeners are fortunate enough to find some 

 of the plants described in the following notes quite as 

 easy as those already named, but that is not the general 

 experience with them. 



D. alpinus (Alpine Pink). This is one of the loveliest 

 of all rockery Pinks, with glossy leaves and short stems and 

 big flowers of brilliant rose. Its home is in the European 

 Alps. It thrives best in loam, with some lime added, 

 or in a limestone moraine, although occasionally it does 

 not do so well in the moraine. Some find that it needs 

 a little shade. There is a white variety, and there are 

 also others of varying shades, from white to rose. In- 

 creased by seeds, division, or cuttings. 



