PKOPAGATION. 



61 



from weeds, and thin them as directed under the name of 

 each plant. 



Propagation by Division. — Propagation hy division, 

 in the case of bulhs or tuhers, is analogous to sowing 

 seeds. A bulb requires the same influences to make it 

 vegetate, and its manner of growth is much the same, but 

 for all bulbs the soil should, be deeply pulverized, and 

 most bulbs and kibers require to be planted more deeply 

 than seeds. 



Suckers. — Sending up suckers, forming offsets and 

 throwing out runners, are all natural ways of propagation, 

 and if all plants produced them, nothing more would be 

 required than to divide the offspring from the parent, and 

 replant in any suitable soil. But, in general, those only 

 produce suckers that send out stray horizontal roots, as 

 the sucker is in fact a bud from one of these roots which 

 has pushed its way through the soil and become a stem 

 As this stem generally forms fibrous roots of its own above 

 the point of junction with the parent root, it may be slip- 

 ped off and planted like a rooted cutting. Its supply ol 

 nourishment will be diminished when separated from the 

 parent stem, and its head, therefore, should be cut in to 

 diminish evaporation. It is well, when the parent plant 

 is strong, to take up a part of the horizontal root and plant 

 with the sucker attached. 



Suckers of another kind spring from the collar of the 

 old plant, and are slipped off with any fibrous roots they 

 may have attached. The great objection to planting out 

 suckers is, that plants grown from them have a much greater 

 tendency to throw out suckers, and thereby become ex- 

 ceedingly annoying in gardens, by encroaching on other 

 plants, than if propagated by other methods. Easpberries, 



