Join the IOS today!
Since 1992 the International Oak Society has been bringing together oak enthusiasts from around the world. Born from a shared desire to exchange Quercus seed, the IOS has grown in many directions. Our mission: to further the study, sustainable management, preservation, appreciation and dissemination of knowledge about the genus Quercus and its ecosystems.
To join the IOS, you first need to subscribe to The Cupule, our free e-bulletin, by clicking on the button below. Then log in using the username and password you created and you will find instructions to join the IOS on the home page.
To read about membership rates and benefits, click on "Learn More" below.
Editor's Picks
Who was Quercus grahamii named in honor of?
Roderick Cameron
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Dec 17, 2024
The Tree of the Year Association in Germany selected a non-...
Website Editor
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Dec 16, 2024
A 16th century commentary on the medicinal property of oaks...
Website Editor
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Dec 16, 2024
Plant Focus
Some personal observations of this rare oak in southwestern Turkey
Latest Articles
This work of art is arguably the most significant depiction of an oak in 20th century art.
A little-known species from the northern Zagros forests of Iran
Latest Blog Posts
A project to raise funds to conserve oaks by recording the music they make.
An Ansel Adams photograph is featured on a postage stamp.
A beautiful and sonorous name has sunk into synonymy.
Andrew Hipp talked to the legendary Joey Santore about genus Quercus.
The oak depicted on the new coin is a challenge to identify.
Upcoming Events
Feb 19, 2025
Cecilia Alfonso Corrado, Tim Boland and Emily Elingson will present in this webinar.
May 08, 2025 to May 13, 2025
This multiday event will include visits to oak collections in Victoria, New South Wales, and Canberra.
May 15, 2025 to May 18, 2025
This four-day event will feature visits to legendary Hackfalls Arboretum and Eastwoodhill Arboretum, the National Arboretum of New Zealand, among others.
May 29, 2025 to Jun 01, 2025
It's high time we took another look at the Belgian oak collections. This time the event will take place over the Ascension weekend, 29 May–1 June 2025, four days.
Jun 07, 2025 to Jun 08, 2025
The 2025 edition of the UK OODs will focus on the Fagaceae family and include visit to two collections in Cornwall.
