18 



The Garden. 



called adventitious buds. In such cases tliej may be employed 

 for the purposes of propagation. 



Eoots are not inactive during the winter, as many suppose, 

 except while actually frozen, but are perpetually extracting food 

 from the earth, and storing it up for the next season's use. A 

 long, mild winter is there- 

 fore favorable to the vege- 

 tation of the succeeding 

 spring. 



Roots are of various 

 kinds. In reference to 

 their duration, they are 

 classed as annual^ Men- 

 ■nial, and perennial. An 

 annual root lives but a bpindleroot. 

 single year. It is always fibrous^ or composed of numerous 

 branches or rootlets. Biennial roots are those of plants which 

 do not blossom till the second year, at the end of which they 

 perish. They are thickened ov fleshy, and of various shapes — 

 conical, as in the carrot ; spindle-shaped, as in the radish ; tur- 



FIBROTJS BOOT. 



TUBEROUS BOOT. 



CREEPING BOOT. 



nip-shaped, clustered, i^iberous, etc. Perennial roots are those 

 which, like the roots of trees and woody plants, and some 

 others, survive from year to year indefinitely. 



A tuber, of which the potato is the best example, is not 

 strictly a root, but a modification of the stem, running beneath 



