EVERGREEN TREES. 155 
partial exhalation is going on from the buds and smaller 
branches of trees upon which there are no leaves; and this 
loss of moisture must be supplied mainly through the roots, 
consequently it becomes necessary to keep them in a posi- 
tion where the required amount of moisture can be’ ob- 
tained ; if not, the tree soon becomes dry and dead. 
Evergreens probably exhale more from their leaves dur- 
ing winter than deciduous trees do through their buds; 
and this is one cause why, in very-cold climates, it is inju- 
dicious to move evergreens in the fall, thereby separating 
the roots from the soil to which they had formed a connec- 
tion by growth; not being able to form another before 
coid weather, they perish for the want of moisture alone. 
When Evergreens can be moved with a large ball of earth 
attached, it may be done at almost any time. In mild cli- 
mates, where the soil does not freeze deeply, the fall is a 
safe and suitable time; but in the more Northern States 
this operation should be deferred until spring, unless it is 
done early in fall so that new roots may be emitted before 
cold weather. 
Spring is the time chosen by our nurserymen for trans- 
planting Evergreens, and they usually begin so soon as the 
ground has become sufficiently dry and settled to work 
easily and continue until the trees begin to make a growth. - 
Some say the later the better; but this assertion is like 
many others, it being founded upon convenience; and be- 
cause evergreens can be transplanted later than many 
other trees, it is usually delayed; and to give a plausible 
excuse for the delay, it is said to be the best time. If 
planted early, the ground becomes settled about their 
