This is a good question. I would recommend reviewing this book:
http://www.treedictionary.com/DICT2003/TPRUNING.html
If you library does not have it, ask them to order it.

Also, it sounds like you would be better starting with a healthy tree.
For correct planting and care instructions I STRONGLY "SUGGEST" this book.
http://www.treedictionary.com/DICT2003/MARBOR.html

here are some web sites that may also help you.

1. Techno Tree Biology Dictionary
http://www.treedictionary.com . Look up "logging".

2. Articles written by DR. ALEX L. SHIGO, one of the foremost authorities
worldwide on tree systems today online at
http://www.treedictionary.com/DICT2003/shigo/index.html

3. Literature Available by Dr. Shigo is he
http://www.treedictionary.com/DICT2003/treeinfo.html

4. Hard to get Documents
http://www.treedictionary.com/DICT20...get/index.html


If you have any suggestions please let me know. 610-864-5251

John A. Keslick, Jr.
Tree Biologist
http://mercury.ccil.org/~treeman/
Beware of so-called TREE EXPERTS who do not understand TREE BIOLOGY!
Storms, fires, floods, earthquakes, and volcanic eruptions keep reminding us
that we are not the boss.


"The Gallaghers" wrote in message
news:uuAmg.5460$x6.1711@trndny05...
Our kousa dogwood has become rather floppy topped - it is reaching for
more
sun. Transplanting is not an option. What about pruning back some
branches?

We live in SW Pennsylvania. Best time of year to do this?