Please visit the following sites for more information

PURDUE UNIVERSITY
Oak Wilt Information– www.ces.purdue.edu/extmedia/BP/BP-28.html
The International Society of Arboriculture (ISA) created www.treesaregood.com to provide the general public with quality arboriculture, or tree care, related information– trees are good.com
 
This tree planting site is prepared and maintained by Dr. Edward F. Gilman, Professor, Environmental Horticulture Department, egilman@ufl.edu– http://hort.ifas.ufl.edu/woody/planting.shtml
 

Brian Mann
IN-0322B
The International Society of Arboriculture is a worldwide professional organization dedicated to fostering a greater appreciation for trees and to promoting research, technology, and the professional practice of arboriculture.-http://www.isa-arbor.com/home.aspx
ASCA Consulting Arborists possess the highest levels of technical and business skills in the industry, making them the preferred choice as authoritative experts. ASCA members are trusted and respected authorities in legal, environmental and regulatory arenas, among others – giving you the distinct advantage when you select a designated Consulting Arborist.– http://www.asca-consultants.org
The Tree Care Industry Association is a 68-year-old public and professional resource on trees and arboriculture representing approximately 2,100 tree service and affiliated company members. This site has free tree care information and a free zip code search of local tree companies for consumers.– http://128.241.193.252/index.aspx