34 ROGK GARDENING FOR AMATEURS 



Although alpines of undoubted hardiness and vigour may 

 be planted in mild weather between September and March, 

 it should not be forgotten that there is some risk in doing 

 so, and, if it can be arranged, the work had far better 

 be done in September or March. With regard to the 

 choicer alpines, it is unusual to put them out later than 

 the middle of October or earlier than March. It is much 

 better to keep them in pots in a cold frame during 

 winter, and plant in spring. 



