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Editor's Picks

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Dr. Michael Avishai, a leading oak expert, botanist, and...
Ori Fragman-Sapir | Feb 08, 2019
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The Huntington, in San Marino, CA, obtained a grant from...
Website Editor | Feb 08, 2019
It may surprise you to learn that we are not the first Oak...
Shaun Haddock | Dec 15, 2018

Plant Focus

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Quercus douglasii is an endemic California oak tree, affectionately called “the blue oak” due to its distinctive blueish-green leaf color....

Upcoming Events

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Mark Frith: a Legacy of Ancient Oaks

An exhibition at Royal Botanic Gardens, Kew (UK) that will be of interest to IOS members: Mark Frith's breath-taking portraits highlight the architectural beauty of tree trunks, bark and branches in winter. This series of 20 highly intricate, large scale graphite drawings by Mark Frith depicts Britain’s most characterful veteran oaks, many of which are more than 1,000 years old.