42 



THE CULTIVATED EVERGREENS 



they stood before, packing the soil firmly. During the summer 

 the soil should be loosened frequently with the garden hoe. 



Some of the more slowly rooting evergreens, such as retinis- 

 pora or chameecyparis, some junipers. Thuja orientalis, Cedrus 

 lihani, and all picea, should be left in the flats in a half shady 

 place during summer and potted in September. Taxus cuttings, 

 even if well rooted, should not be planted out in spring, but 

 should be potted in September and kept over winter in a 

 frost-free frame or a cool greenhouse. 



Propagation by grafting. (Figs. 4-7.) 



Varieties which cannot be grown from cuttings or seed must 

 be grafted. If possible, the stock for grafting should be potted 

 one year before use. When potted in fall it should be well 

 rooted before grafting. Different sizes must be selected as 

 it is difficult to put a small graft on a thick stock. 



Grafting should be performed on stock in the same class; 

 juniperus should be grafted on J. virginiana, thuja on T. occiden- 

 talis, picea on P. Abies, abies on A. concolor, for although this 

 is a more expensive stock it is far better than A. balsamea. 



4. Stock of conifers for grafting. 



