Propagation hy Parts Intact. 



185 



consists in simply cntting off the root or nnderground 

 stem -n'lience the sucker proceeds, and transplanting the 

 latter. 



The growth of suckers may generally be stimulated in 

 plants that naturally produce them, by cutting off the 

 roots or undergroirnd stems from which they grow, or by 

 severely iDruning the top. 



The propagation of woody plants from suckers is not, 

 as a rule, considered wise, since tlie roots are usually 

 poorly developed in proportion to the stein, and some 

 plants grown in this manner seem to acquire the tendency 



Fig. 81. Fig. s2. 



Fig. 81. Sucker plants of the red raspberry, Ruhus sirigosus. A, before 

 growth has started; B, after. The two shoots of B starting just above the 

 roots form the new oanes. 



Fig. 82. Tip plant of black raspberry. The bud, whence the young 

 shoot starts, appears at the base of the parent cane. (After Bailey). 



to form suckers excessively. In the red raspberry * and 

 the blackberry,! however, propagation by suckers is the 

 most convenient method, and it appears to be followed 

 by no bad results (Fig. 81). 



348. Propagation by Stolons. A stolon is a branch 

 that starts above or at the surface of the ground and 

 either grows prostrate or curves downward till it reaches. 



* Rubus sirigosus, R. Idoeus. t R. villosus. 



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