UPROOTING BY FROST. 



511 



soil is thawed completely, the plants cannot resume their 

 original position, their roots not being stiff enough. 



a 



Fig. 240. Spruce seedling (a) lifted (b), (c] and (d) and uprooted by frost (e). 

 (N) Original ground-level. 



2. Damage done in Particular Cases, 

 (a) Species and Age of Plant. Nearly all woody plants may 

 be uprooted by frost during the first two years of their life, 



