GROWING PLANTS BY CUTTINGS, ETC. 53 



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soil, it will develop roots and grow into a new plant. 

 The crops of sugar cane are grown by planting the 

 upper sections of the stem. The potato crop is grown 

 by planting the tubers, which are underground stems. 

 Hyacinths and tulips are also started from underground 

 stems. Geraniums are grown by planting the green 

 shoots or branches. 

 In growing some 

 plants the cuttings 

 are made from 

 twigs or small 

 branches of mature 

 or ripened wood. 

 In starting willows 

 and cotton woods, 

 the twigs of the 

 previous summer's 

 growth are used. 

 Grapes and cur- 

 rants are also reproduced by cuttings of mature wood. 

 The ends of black raspberry branches are bent down 

 to the ground and covered with soil. Roots then form 

 from the covered branches, and these rooted branches 

 are cut and become new plants. Strawberries produce 

 runners which take root at many places. These rooted 

 parts become separate plants. 



There are many kinds of plants which send up new 

 plants from the roots. If the plow cuts the roots of 

 the black or yellow locust, the severed roots will send 



STEPS IN TONGUE GRAFTING 



a, the two branches to be joined; 6, a tongue cut in 

 each; c, how fitted together; d, method of wrapping 



