Links & Affiliations
The following links are those I personally use during everyday searches:
Professional Affiliations
International Society of Arboriculture (ISA)
Website: http://www.isa-arbor.com
American Society of Consulting Arborists (ASCA)
Website: http://www.asca-consultants.org
Helpful tree-related sites:
My favorite site for anything trees
Website: http://hort.ifas.ufl.edu/woody/
Tree selection
http://www.hort.uconn.edu/plants/