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Did you know that Turner's oak occurs in the wild?
Quercus xturneri
Posted Mon, 2020-12-14 13:35 in Charles Snyers d'Attenhoven's blog
This blog entry focuses on the Engelmann oak grove at Los Angeles County Arboretum and Botanic Garden.
engelman_sb_600x450_0.jpg
Posted Sat, 2018-12-15 16:02 in Charles Snyers d'Attenhoven's blog
This blog post focuses on the day and a half we spent in San Luis Obispo County. The tree of that leg of our trip was clearly Quercus agrifolia from the champion Ancestor tree at the Halter...
q_agrifolia_600x450.jpg
Posted Sun, 2018-12-02 15:55 in Charles Snyers d'Attenhoven's blog
After moving it a month ago, we now have re-looked our website, making it fully responsive.
New IOS Theme 2018
Posted Thu, 2018-09-27 13:20 in Charles Snyers d'Attenhoven's blog
We moved our website to A2 Hosting's data center in Michigan on Friday. The migration went very well.
Posted Tue, 2018-08-28 05:15 in Charles Snyers d'Attenhoven's blog
I have always suspected that there was a secret hawthorn society hiding within the IOS. Last weekend, the Belgian Dendrology Society held a full-day event devoted to Crataegus. Three past and...
Posted Tue, 2017-10-10 11:46 in Charles Snyers d'Attenhoven's blog
A one-day trip in Los Lunas and Albuquerque to see oaks in the city
Posted Fri, 2017-09-22 10:18 in Charles Snyers d'Attenhoven's blog
In the last days of September 2015, I visited La Closerie du Rond-Chêne and its oak collection, in southern Belgium, with past IOS President, Eike Jablonski.
Posted Sun, 2016-12-18 18:24 in Charles Snyers d'Attenhoven's blog
Dan Keiser will be showing his IOS documentary, covering 20 years of traveling with the Oak Society, in New Richmond, Wisconsin on the 21st of February. 
Posted Mon, 2016-02-15 12:03 in Charles Snyers d'Attenhoven's blog
Tomorrow, the United Nations Conference on Climate Change COP21 opens in Paris.  A couple of days ago, I came across an essay published by Jonathan Franzen, author of Freedom, that I found quite...
Posted Sun, 2015-11-29 11:05 in Charles Snyers d'Attenhoven's blog
Interesting article on the website of Nature, the science weekly magazine, referring to a study they published.  The number of trees on the planet is estimated to be 3 trillion. 
Posted Thu, 2015-09-24 07:32 in Charles Snyers d'Attenhoven's blog

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Quercus coccifera, 97 cm dbh and 15 m canopy spread
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Lainey Kirshberger and Ryan Silver, students at Oklahoma State University, participated in the fieldwork and will lead the genetic and epigenetic analysis under the supervision of Dr. Antonio R. Castilla.
Endangered oak Quercus hinckleyi shows strong genetic...
Website Editor | Jun 09, 2026
The current Red List status and modelled outlook for the eight Californian oak species, plus tanoak
New paper should significantly change our approach to...
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Plant Focus

Quercus orocantabrica
Roderick Cameron and Carlos Vila-Viçosa give an account of this intriguing species from northwestern Iberia with a complex taxonomic and...

CSA's blog

Did you know that Turner's oak occurs in the wild?
Quercus xturneri
Posted Mon, 2020-12-14 13:35 in Charles Snyers d'Attenhoven's blog
This blog entry focuses on the Engelmann oak grove at Los Angeles County Arboretum and Botanic Garden.
engelman_sb_600x450_0.jpg
Posted Sat, 2018-12-15 16:02 in Charles Snyers d'Attenhoven's blog
This blog post focuses on the day and a half we spent in San Luis Obispo County. The tree of that leg of our trip was clearly Quercus agrifolia from the champion Ancestor tree at the Halter...
q_agrifolia_600x450.jpg
Posted Sun, 2018-12-02 15:55 in Charles Snyers d'Attenhoven's blog
After moving it a month ago, we now have re-looked our website, making it fully responsive.
New IOS Theme 2018
Posted Thu, 2018-09-27 13:20 in Charles Snyers d'Attenhoven's blog
We moved our website to A2 Hosting's data center in Michigan on Friday. The migration went very well.
Posted Tue, 2018-08-28 05:15 in Charles Snyers d'Attenhoven's blog
I have always suspected that there was a secret hawthorn society hiding within the IOS. Last weekend, the Belgian Dendrology Society held a full-day event devoted to Crataegus. Three past and...
Posted Tue, 2017-10-10 11:46 in Charles Snyers d'Attenhoven's blog
A one-day trip in Los Lunas and Albuquerque to see oaks in the city
Posted Fri, 2017-09-22 10:18 in Charles Snyers d'Attenhoven's blog
In the last days of September 2015, I visited La Closerie du Rond-Chêne and its oak collection, in southern Belgium, with past IOS President, Eike Jablonski.
Posted Sun, 2016-12-18 18:24 in Charles Snyers d'Attenhoven's blog
Dan Keiser will be showing his IOS documentary, covering 20 years of traveling with the Oak Society, in New Richmond, Wisconsin on the 21st of February. 
Posted Mon, 2016-02-15 12:03 in Charles Snyers d'Attenhoven's blog
Tomorrow, the United Nations Conference on Climate Change COP21 opens in Paris.  A couple of days ago, I came across an essay published by Jonathan Franzen, author of Freedom, that I found quite...
Posted Sun, 2015-11-29 11:05 in Charles Snyers d'Attenhoven's blog
Interesting article on the website of Nature, the science weekly magazine, referring to a study they published.  The number of trees on the planet is estimated to be 3 trillion. 
Posted Thu, 2015-09-24 07:32 in Charles Snyers d'Attenhoven's blog

Pages

The International Oak Society acknowledges the generous support of the following institutions:

Supporting Institutional Members

 

Standard Institutional Members

Rice University
San Diego Botanic Garden logo
San Diego Zoo Wildlife Alliance logo
South Carolina Botanical Garden

 

The Huntington
The John Fairey Garden