WHAT TO GROW IN ROCK-GARDENS 107 



Saxifraga (continued) 



oppositifolia. Several lovely varieties 

 of this (rose, lilac, red, white, 

 etc.), March-April . . about 2 ins. 



peltata (rose), April-May . . ... 2-4 ins. 



punctata (white), May-June . . . . 9 ins. 



Red Admiral (crimson), May- June, 



Mossy . . . . . . . 9 i ns - 



sancta (yellow), April-May . . . . 3 ins. 



trifurcata (white), May-June, Mossy 6 ins. 

 umbrosa (London Pride), (white, and 

 pink) , May- July . (Will do in shady 

 position) . . . . . . . . 9-12 ins. 



Wallacei (white), April-May, Mossy . . 6 ins. 



Sedum : Quite easy to grow. Begin with S. Acre 

 (3 ins., yellow, May- June), and S. album (3 ins., white, 

 June- July). Then try S. aizoon (12 ins., yellow, July- 

 Sept.) ; grandiflorum (3-6 ins., yellow, May- July) ; 

 Kamtschaticum (9 ins., yellow, July), and spurium (6 

 ins., pink and white, July-Aug.). Sedum spectabile 

 described in Chapter VII may also be grown. All these 

 will do in any good soil, in a dry sunny position. They 

 can be planted in fissures between rocks or in pockets. 

 Plant in November-March. 



Sempervivum (Houseleek] : There are numerous 

 beautiful varieties suitable for the rock-garden. The 

 plants like a dry position and can be planted in the same 

 manner as Sedums. 



Good Varieties. 

 Sempervivum 



arachnoideum (pink and purple), July . . 6 ins. 



calcareum (red), July 6 ins. 



montanum (red), June .. s .. , 6 ins. 



Silene : A pretty plant for the rock-garden, and not 



hard to grow. A peaty soil is necessary for S. acaulis 



(3 ins., rosy-pink, April-May), but those given in the 



following list will do well in any ordinary soil. Silenes 



