88 



GENERAL PRINCIPLES. 



inches in height. During the next summer's growth, every 

 branch is sufficiently rooted to be separated and placed in 



nursery rows the following 

 spring. This is the way to 

 obtain strong stocks ; for the 

 cutting back of the mother 

 plant produces very vigorous 

 shoots the first season, and 

 when another season's 

 growth is added, they are as 

 strong as can be desired. 

 We succeed in rooting 

 these shoots the first season 

 of their growth by earth- 

 ing them up about mid- 



A, the point at"wwc7the mother plant snmmer ; but they are not 

 was cut back. quite strong enough, or suf- 



ficiently rooted, for transplanting and budding the fol- 

 lowing season. 



Fig. 65. MOUND -LAYERING OR 

 BANKING-UP. 



SECTION 3. PROPAGATION BY SUCKERS. 



Suckers are shoots sent up from the roots. We observe 

 them most frequently around trees that have had their 

 roots wounded by the spade or plow. The wounds induce 

 the formation of buds, and these buds send up shoots. 

 They are occasionally used from necessity for stocks, but 

 should not be employed where seedlings can be obtained. 

 Occasionally, we find certain varieties of plum throw up 

 fine vigorous suckers, that would make excellent stocks if 

 taken off with good roots ; but their tendency to produce 

 suckers renders them exceedingly annoying in gardens, 

 and, on this account, objectionable. The roots of the 

 raspberry are full of buds, and, consequently, throw 

 up great quantities of suckers, and the smallest cuttings 



