Frequently Asked Questions
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What is the International Society of Arboriculture (ISA)?

A: The International Society of Arboriculture (ISA) was founded in 1924 and has served the tree care industry for over seventy years as a scientific and educational non-profit organization. ISA supports tree care around the world and is dedicated to the care and preservation of shade and ornamental trees. This organization continues to be a dynamic medium through which arborists around the world share their experiences and knowledge for the benefit of society. Aligned on many fronts with other green organizations, ISA is working hard to foster a better understanding of trees and tree care through research and the education of professionals as well as global efforts to inform tree care consumers.

News

What is an Arborist and How Can You Find One?
From Planet Green a Discovery Company MORE >>

Organic Gardening: Urban Forestry and Your Home
Networx.com, a home improvement website, describes the power of a strategically planned urban forest to transform and restore any city. MORE >>

Thousand Cankers Disease: A Red Alert for Walnut
The black walnut may be the next on the list of disappearing trees. Do not sell or transport walnut logs, slabs or firewood (any walnut with bark attached) from areas of known or suspected infestation into unaffected areas. MORE >>

Rid your lawn of snow mold
Spring is upon us and so is snow mold. Lawn experts provide tips on how to identify and help rid a property of this unsightly lawn fungus. MORE >>

National Register of Big Trees
Big trees are symbols of all the good work trees do for the quality of the environment-and our quality of life. MORE >>

National Tree Benefits Calculator
The Tree Benefit Calculator allows anyone to make a simple estimation of the benefits individual street-side trees provide. This tool is based on i-Tree’s street tree assessment tool called STRATUM. With inputs of location, species and tree size, users will get an understanding of the environmental and economic value trees provide on an annual basis. The Tree Benefit Calculator is intended to be simple and accessible. As such, this tool should be considered a starting point for understanding trees’ value in the community, rather than a scientific accounting of precise values. For more detailed information on urban and community forest assessments, visit the i-Tree website. MORE >>

Green Spaces Improve Health
(BBC News) There is more evidence that living near a 'green space' has health benefits. MORE >>


"I think that I shall never see / A poem lovely as a tree." - Joyce Kilmer, "Trees," 1914

Resources

Legends of Arboriculture

This video (VHS) features hundreds of historic photos and clips that reflect the history of arboriculture.

Book, $59.95; Video, $24.95. Both for $74.95

Available through the ISA Web Store

© International Society of Arboriculture 2009
P.O. Box 3129, Champaign, IL 61826
Email comments & questions to isa@isa-arbor.com