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
Steve Potter reviews decline diseases affecting oaks in the...
Steve Potter
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Feb 12, 2025
A review of Andrew Hipp's new book
Steve Potter
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Feb 12, 2025
Allen Coombes shares observations of unexpected phenology...
Allen Coombes
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Jan 14, 2025
Plant Focus
Quercus ×ludoviciana is a naturally occurring oak hybrid from southeastern United States, which has flourished and attracted attention in...
Latest Articles
Nineteen projects funded by IOS Oak Conservation and Research Fund
Oaks of the Zagros mountains are under threat.
Large oaks have been declared "botanical monuments of nature"
Latest Blog Posts
Back in September 2012, the UK’s BBC TV’s website reported on the recovery of a 5,000-year-old, 44ft (13.4m) Fenla
I would like to share with the IOS a project that should be of interest to members.
Who was Quercus grahamii named in honor of?
A 16th century commentary on the medicinal property of oaks and aconrs
A project to raise funds to conserve oaks by recording the music they make.
Upcoming Events
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 visits to two collections in Cornwall.
Oct 05, 2025 to Oct 08, 2025
International Oak Society Conferences are unique opportunities to talk, learn, and laugh with oak enthusiasts that hail from vastly different horizons.
