INARCHING OR APPROACH GRAFTING 



2 37 



to renew the entire top of a large tree. All the important 

 branches should be grafted if the original fruit-bearing sur- 

 face is to be maintained. This work is performed about the 

 time the trees are ordinarily pruned in the spring, and just be- 

 fore growth starts. After the grafts are inserted in the cleft, 

 all the exposed surface of 

 the stock and tips of the 

 scions are coated with 

 grafting wax to keep the 

 scions moist and to pre- 

 vent decay. 



Inarching or Approach 

 Grafting. There are 

 many plants that cannot 

 be successfully grafted 

 by any of the previous 

 methods. Such plants 

 can be more conveniently 

 propagated by inarching. 

 With this method, each 

 plant remains attached 

 to its own roots and the 

 scion is detached only Fig ' I3 ' ~ Top grafting a young apple tree ' 

 after the graft has united. To practice inarching, the 

 plants must be grown near together or in pots, that it may 

 be possible to bring them together and to unite the stock 

 and scion without detaching them from the plants. The 

 cambium layer of each may be exposed by any cut that 

 will enable the two to come into direct contact when tied. 

 In some plants a tongue is cut along the side of the stem 

 of each ; in others, as herbaceous plants, the outer bark 

 is simply scraped to expose the cambium. It is important 



