6o THE CULTURE OF POT-PLANTS 



off. Propagation can be effected by cuttings in spring and 

 autumn. 



Nerium Oleander (Oleander). — Some varieties are single 



Fig. 23.— Nerium Oleander, flowers and shoot prepared as a cutting. 



and others are double, the colours white or red or yellow of 

 many different shades. The treatment should be the same 

 as for the myrtle, 



Nierembergia. — N. frutescejis is a small hardy shrub 

 which is sometimes grown in pots. Its pale blue tubular 

 flowers, borne in early summer, are very effective. A more 



