Fun Facts About Trees
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Record-setting Trees

  • One of the tallest soft wood trees is the General Sherman, a giant redwood sequoia of California. General Sherman is about 275 ft or 84 m high with a girth of 25 ft or 8 m.
  • The 236 ft or 72 m high Ada Tree of Australia has a 50 ft or 15.4 m girth and a root system that takes up more than an acre.
  • The world's tallest tree is a coast redwood in California, measuring more than 360 ft or 110 m.
  • The world's oldest trees are 4,600 year old Bristlecone pines in the USA.
News

Nominate a True Professsional of Arboriculture

ISA Announces search for the 2010 True Professionals of Arboriculture

Do you know a tree care provider who is a true professional of arboriculture? If so, you are encouraged to nominate them for the ISA True Professionals of Arboriculture Recognition award.

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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 >>

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

Why Leaves Really Fall Off Trees
(From NPR)– You think you know why leaves fall off trees. Well, you're wrong. It's not the wind. It's not the cold. 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 >>

USDA Newsroom
USDA's collection of "hot topic" press releases ranging from current pest alerts for specific regions of the United States to new trends in disease prevention and tree and plant care. MORE >>


"The best friend on earth of man is the tree. When we use the tree respectfully and economically, we have one of the greatest resources on the earth." - Frank Lloyd Wright

Resources

Tree Identification Posters

$12.95 each Available through the ISA Web store
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