116 



PRACTICAL PLANT PROPAGATION 



into this cut. Plants may be propagated by this method either 

 when in full growth or when dormant. Waxing is necessary out of 

 doors; tying with waxed string indoors holds the cion in place. If 

 the stock is headed back slightly, the growth will be encouraged. 



SPLICE GRAFTING 



An exceedingly simple form of grafting is the splice graft. Stock 

 and cion are cut with a long diagonal cut as for the whip graft. 

 The two parts are tied together without further fitting, although the 

 stock and cion should be approximately the same size. Frequently 

 a pin is pushed into the pith of the stock, its head removed and the 

 cion forced down over it; the pin thus takes the place of the tongue 

 in a whip graft. This method is used on Roses (see page 167) and 

 Cacti (see fig. 59), and is only successful in the greenhouse. It is a 

 good method for soft wooded plants which can not be split easily. 



SADDLE GRAFT 



In making the saddle 

 graft the stock is cut in 

 the form of a wedge. 

 The cion may either 

 have a section removed 

 to fit over the wedge or 

 it may be merely split 

 upward (see fig. 60). 

 This method is success- 

 fully employed in graft- 

 ing Rhododendrons. 



BRIDGE GRAFTING 



"|5^^ 



When trees are gir- 

 dled or injured by rab- 

 bits or cultivators so 



that the bark is injured, the wound may be encouraged to heal and 

 the sap caused to flow, by bridging the injury with cions cut wedge- 

 shape at each end pushed in between the bark and wood. Use a 

 knife to open an entrance for the wedge of the cion. The exposed 

 cut areas must be waxed. (See fig. 61.) Sometimes suckers or 

 seedling trees, rooted at the base of the injured tree are used as 

 cions. This is usually successful because the cions are rooted and 

 growing vigorously. 



Fig. 59. Splice grafting Pereskia Cactus 

 (See page 93) 



