GRAFTING AND BUDDING 327 



in September for apples and pears, budding may 

 be done to best advantage. 



If there is a marked difference in rate of 

 growth of cion and stock, or if for any reason the 

 two do not blend to advantage, an ugly swell- 

 ing often results at the point of union; hence 

 the experienced grower avoids making such 

 combinations. 



These plant affinities cannot be foretold; 

 they can be determined only by experiment. As 

 already pointed out, the success, vitality, and 

 growth of a graft will very largely depend upon 

 the affinity between cion and stock; occasionally 

 species from different genera may be satisfac- 

 torily grafted. 



Some of the pears often thrive even better for 

 a time and produce superior fruit when trans- 

 ferred to a hawthorn or apple stock. Almond 

 cions thrive well on peach or plum seedlings. 

 Apricot cions grow and thrive well on seedling 

 plum or peach stocks. 



Cherry cions do well on seedling stocks of the 

 wild Mazzard cherry of Europe. The Mahaleb 

 cherry is sometimes used when it is desired to 

 have dwarf -growing trees. The peach generally 

 thrives on its own roots only. Apples thrive best 

 on their own roots or on various wild crab apple 

 roots. 



