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Editor's Picks

Call for Session Proposals for the 11th IOS Conference Now Open
Share your oak story in Oaxaca!
Website Editor | Mar 17, 2025
Single stem bleed
Acute Oak Decline and the Decline Disease Spiral Model: the State of the Game in the UK
Steve Potter reviews decline diseases affecting oaks in the...
Steve Potter | Feb 12, 2025
Oak Origins by Andrew Hipp
Book Review: Oak Origins – From Acorns to Species and the Tree of Life
A review of Andrew Hipp's new book
Steve Potter | Feb 12, 2025

Plant Focus

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Hybrid Highlight: Quercus ×ludoviciana Sarg.
Quercus ×ludoviciana is a naturally occurring oak hybrid from southeastern United States, which has flourished and attracted attention in...
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Charles Snyers d'Attenhoven's blog

Focus on Engelmann Oak

By Charles Snyers d'Attenhoven | December 15, 2018
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This blog entry focuses on the Engelmann oak grove at Los Angeles County Arboretum and Botanic Garden.

Oaks in San Luis Obispo County

By Charles Snyers d'Attenhoven | December 2, 2018
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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 Ranch Winery to the pygmy trees of the Elfin Forest in Morro Bay.

A Conversation about Quercus ×turneri

By Charles Snyers d'Attenhoven | December 14, 2020
Quercus xturneri

Did you know that Turner's oak occurs in the wild? Allen Coombes and Giles Crisp, members of the International Oak Society, discuss this popular hybrid in an interesting "tree conversation."

New Look for the IOS Website

By Charles Snyers d'Attenhoven | September 27, 2018
New IOS Theme 2018

After moving it a month ago, we now have re-looked our website, making it fully responsive.

IOS Website Has Moved

By Charles Snyers d'Attenhoven | August 28, 2018

We moved our website to A2 Hosting's data center in Michigan on Friday. The migration went very well. Unfortunately a technical incident, issues with A2's DNS Services, prevented us to go live. These issues were solved on Monday evening and the site is now accessible at its new location. See here: https://a2status.com/incident/564

The Hidden Hawthorn Society

By Charles Snyers d'Attenhoven | October 10, 2017

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 current Presidents of the IOS attended the meeting. 

Oaks in the New-Mexican Urban Landscape

By Charles Snyers d'Attenhoven | September 22, 2017

A one-day trip in Los Lunas and Albuquerque to see oaks in the city

What is the Society's Actual Inception Year?

By Charles Snyers d'Attenhoven | December 18, 2016

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. It was just a couple of weeks before the 8th International Oak Society Conference at The Morton Arboretum. So we were talking about the Conference when the conversation deviated to when the Society was really founded. Twenty-one years earlier, the IOS had held its first Conference, also at The Morton.

Quercophiles Abroad

By Charles Snyers d'Attenhoven | February 15, 2016

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. 

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