63 



HORTICULTUEAL MANUAL. 



with, the leaves cut off or divided. If quite pure fresh- 

 water stream sand is used with needed bottom drainage, 

 there is little danger of using too much water, as such sand 

 will only retain a certain amount. As soon as roots have 

 pushed an inch into the sand the cuttings should be potted 

 in good soil. 



Fig. 30. — A, rose cutting ; 5, hardy hydrangea cutting. 



67. Need of Buds in Plant Division. — The beginner in 

 , this interesting work will find some curious confirmation 

 of the theory that leaf buds are essential to root and top 

 growth. As an example, a leaf of some plants will root in 

 the cutting-bench from tlie stem cut above the axillary 

 bud. After rooting the leaf will increase in size and 

 thickness and continue to live for years. A leaf of wax 

 plant {Hoya carnosa) will throw out roots and at the end 



