First test the vigor of a branch to see if pruning might be necessary. (See
illustration 22)
Editor's Note: A great way plant health and vigor can be determined
by using this illustrated "bark scratch test".

If pruning is necessary, prune dead and dying branches properly to help the tree heal its
branch wounds faster and to reduce the chances for infection that could lead to decay.
(See illustration 23)
Proper pruning will help the tree, while improper pruning only causes the tree more
trouble . . .
Serious trouble can result from improper pruning unless you these steps
as illustrated:
1. Undercut
2. Upper cut to remove branch
3. Flush cut
Editor's Note: You should always remove a limb
using the above three steps. In effect you are making
three cuts. You remove the limbs weight in step one and two and remove
the stub in step three.
Prevent by Proper Pruning
Prune old dead stubs properly. (See illustration 28) 
Many microorganisms use old dead stubs as springboards into the trunk. (See
illustrations 29 and 30)
 
When a tree top is broken, prune the broken top. A vigorous branch near the broken
top usually becomes the new leader. When pruned properly, the tree will heal its wound
faster and the likelihood of decay developing decreases. If decay does develop, it is
usually limited to the old leader. (See illustrations 31, 32, and 33)

 
Prune away any branches that might be on a collision course with a building,
power line, or path. If cut when it is still small, its wounds will heal faster and decay
will not start. Branches do not raise in height as a tree grows. (See illustrations 34,
and 35)
 
How To Prevent Wound Problems
- Part II
Forward~Too Late~Tree
Care~Tree Wounds~Prevent Wound Problems~Treat Wounds~Wound RX
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