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UNIVERSITY OF CALIFORNIA EXPERIMENT STATION. 



Time of Grafting. The time most commonly chosen for grafting 

 walnuts in the nursery is the period just before the seedling trees 

 commence growth in the spring, or even after the buds have unfolded 

 and the leaves developed to some extent. Various ideas will be found 

 upon this subject, and it may also be said that results vary to a con- 



FIG. 30. Face and side view of scion for nursery graft. 

 These are somewhat larger than the most desir- 

 able size. 



siderable extent from year to year, even though the grafting is done at 

 apparently the same stage of development. The best average results, 

 however, have been obtained by commencing the work just in time to 

 complete it as the seedlings are coming into leaf. 



In grafting by the method which we shall describe, the first operation 



