PLANT PROPAGATION 



207 



by working them upon the Quince stock. We may, Ukewise, increase 

 the vigor of a variety by grafting it upon a stronger growing species. 

 A familiar example of this is the grafting of certain Roses upon the 

 Manetti Rose. Many times plants are grafted in order to render 

 them more adaptable to adverse soils and climates. An example 

 here is found in the case of Apples which are often grafted upon the 

 Siberian Crab in order to render them better able to withstand intense- 



CLEFT GRAFTING 

 The methods of grafting are explained In the text on the next page. The above 

 Illustration shows in detail how cleft grafting is performed— usually on large Apple 

 and Pear trees. On the left are the cions with tapering cut; on the right, the 

 branches cleft or opened, also showing the waxing over. Below is a section through 

 the top of the stock 



ly cold chmates. Sometimes double grafting has to be practised, 

 especially with fine Pears, but that is a part of the subject we need 

 not enter upon here. 



Girdled trees may be grafted with a bridge graft. In most cases, 

 however, the process of grafting is used to simply multiply the variety. 

 Baldwin Apples are wanted; they do not come true to seed; cuttings 

 are slower; so that some fonn of grafting is used. 



