170 MANUAL OF AMERICAN GRAPE-GROWING 



two three-bud spurs and three of medium vigor to form three 

 two-bud spurs. The head is of good shape, though some of the 

 spurs are a little too low. One, two, or three of these can be 

 removed at the following winter pruning, and the permanent 

 arms and head of the vine formed from canes which develop 



on the two highest spurs. If 

 the vine were too high, the head 

 could be developed the next 

 year from the three lowest spurs 

 and the upper part removed. 



Figure 30 shows vines of the 

 same age of practically perfect 

 shape. Less spurs have been 

 left because the vines were less 

 vigorous. It is easier to prop- 

 erly shape vines which make 

 only a moderate growth during 



FIG. 30. Three-year-old vines: the &st three seasons. On the 



A, pruned for a vase-formed, and other hand, very vigorous vines 



B, for a fan-shaped head. CRn finajly be brought into 



practically perfect shape and the somewhat larger and more 

 numerous wounds necessary are more easily healed by a vig- 

 orous vine. 



Pruning after the third winter. 



For the pruner who understands the pruning of young vines 

 and has brought them to approximately the form represented 

 in Figs. 29 and 30, the subsequent winter pruning is very simple. 

 It involves, however, one new idea the distinction between 

 fruit and sterile wood. 



Up to the third winter pruning, this distinction is not neces- 

 sary ; first, because practically all the wood is fruit wood, and 

 second, because the necessity of forming the vine controls the 

 choice of wood. From this time on, however, this distinction 



A 



B 



