168 MISSOURI BOTANICAL GARDEN BULLETIN 
ns may be moved while in the full growing condition 
uring the summer. aes 
There are several ways of moving trees with a ball. A 
number of different tree-moving machines are employed, or 
for lack of these a stone wagon may be used for medium- 
sized trees. The ball of the tree is dug in accordance with 
the specific requirements of the machine in use. The oper- 
ations involved for one type of machine are as follows: A 
heavy truck with a boom or pole attached (often called “the 
gun”) is lashed to the tree by means of chains, which are 
tightened with a ratchet attachment, the tree having been 
previously padded with straw bags at points of fastening. At 
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A LARGE TREE BEING PREPARED FOR MOVING. 
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the bottom of the truck is located a step-like structure which 
fits into a trench dug 2 feet away from the trunk of the tree 
and acts as a brace in bringing the tree out of the hole into 
a horizontal position. This arrangement necessitates the dig- 
ging of an uneven ball which is only 2 feet wide on one side 
while it may be 8-10 feet on the other. Care should be taken 
to leave all fibrous roots, cutting only the largest which are 
likely to extend a considerable distance out. It is sometimes 
well to prepare the trees beforehand, in June, by trimming 
and cutting the roots at a proper distance from the trunk. 
These roots heal over and fill the ball with numerous fibres. 
The growth is further stimulated by application of manure 
or commercial fertilizers. Artificial watering must be re- 
sorted to, however, if the tree is to remain healthy and vig- 
orous. 
After the trench is dug to a depth of 2 feet and the boom 
of the truck attached, the tree is ready for tilting out of the 
