--

Trust me, for starters try starting here. Learn where the targets are.
A WORLDWIDE PHOTO GUIDE
A NEW BOOK on the correct pruning of trees.
EASY to read. EASY to understand.
EASY to put into practice.
http://www.chesco.com/~treeman/TPRUNING.html

Remember: When a tree is wounded, you should not treat only the wound but
the entire tree. (Tree Pithy Points, SHIGO, 1999 Point #587) So I
recommend this book:
MODERN ARBORICULTURE
A SYSTEMS APPROACH TO PRACTICAL TREE CARE
311 LARGE, CLEAR DIAGRAMS
16 LARGE FULL-COLOR PHOTOS
Hardcover, 440 pages, 600 references, index.
http://www.chesco.com/~treeman/MARBOR.html
DO NOT USE WOUND
DRESSING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!

PS: Remember, people will spend a lot of money on treatments they do not
understand. But, will not spend money on books that will help them
understand.
--
Sincerely,

John A. Keslick, Jr.
Tree Biologist
www.chesco.com/~treeman
Beware of so-called TREE EXPERTS who do not understand TREE BIOLOGY!