Fun Facts About Trees
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Trees and Science

  • Dendrochronology is the science of calculating a tree's age by its rings.
  • Tree rings provide precise information about environmental events, including volcanic eruptions.
  • A mature birch tree can produce up to 1 million seeds per year.
  • Moon trees were grown from seeds taken to the moon by Stuart Roosa, Command Module pilot of the Apollo 14 mission of January 31, 1971. The effort included 400-500 seeds, which orbited the moon on the first few days of February 1971. NASA and the USFS wanted to see if being in space and in the moon's orbit would cause the seeds to grow differently than other seeds.
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 >>


Stand Tall and Proud. Sink your roots deeply into the Earth. Reflect the light of a greater source. Think long term. Go out on a limb. Remember your place among all living beings. Embrace with joy the changing seasons, for each yields its own abundance: the Energy and Birth of Spring; the Growth and Contentment of Summer; the Wisdom to let go of leaves in the Fall; the Rest and Quiet Renewal of Winter. - Ilan Shamir, "Advice From a Tree"

Resources

Tree Care Poster Set

Set of three posters- $24.95 Great for classroom and community education. Available through the ISA Web store

Preparation is Key to Preventing Storm Damage to Trees
Are you and your trees safe from the possible wrath of Mother Nature? MORE >>
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P.O. Box 3129, Champaign, IL 61826
Email comments & questions to isa@isa-arbor.com