PROPAGATION BY GRAFTING 



225 



ornamental trees and shrubs. A (usually dormant) leaf- 

 bud, with a small portion of surrounding bark (Fig. 123), 

 is placed in contact with the cambium layer of 

 the stock. Budding may be successful whenever 

 the cells of the cambium layer are in a state of 

 active division, as indicated by the ready sepa- 

 ration of the bark from the wood. In climates 



Fig. 124. 



Fig. 125. 



Fig. 122. Fig. 123. 



Fig. 122. — Shoot containing buds. The white spaces about the buds 

 indicate the amount of bark to be cut off with the bud. The shoot is 

 inverted for cutting the buds. 



Fig. 123. — Bud cut off, ready for insertion. 



Fig. 124. — Bud partially inserted between the lips of the stock. 



Fig. 125. — Bud inserted and tied. 



having severe winters, budding is most satisfactory when 

 performed near the end of the growing season and with 

 fully matured buds, in order that the buds may not ex- 

 pand until the following spring ; thus the shoots growing 



