106 



GREENHOUSE MANAGEMENT. 



A good potting soil for the begonias is made of well* 

 rotted fibrous sods, to which the same amount of a mix- 

 ture of well-decomposed leaf mold, cow manure and 

 sharp sand in equal parts is added. A little ground 



FIG. 37. DOUBLE TUBEROUS BEGONIA. 



bone will also be of value. As soon as the plants begin 

 to crowd, they should be placed in pots, and should be 

 repotted whenever the pots are filled with roots. If 

 desired, they may be grown in flats or in a cold frame 



