202 CULTIVATION. 



siduity in keeping up the stock by propagation ; 

 a careful nicety in potting and shifting in the 

 proper season ; a regularity in watering when 

 requisite ; a knowledge of the necessay tempe- 

 rature to be kept in the house, and a steady 

 attention to cleanliness, and habits of the plants 

 in general. 



The collection should undergo a thorough 

 examination about the middle of April. At this 

 time the plants are shifted into new and some- 

 what larger pots, if necessary ; at least, they are 

 turned out of their old pots, part of the ex- 

 hausted soil taken away, decayed roots cut off, 

 and then are replaced in fresh pots and compost. 

 The heads are also pruned into form, and neatly 

 tied up to stakes. While the plants are under 

 this treatment, they should be guarded against 

 cold winds while the old bark is sifted, new 

 added, and all well mixed. The bark, when 

 finished, should be about six inches above the 

 kirb, and levelled to allow the plants to be set 

 upon it till the fresh fermentation raised in the 



