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.
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Plant Focus
Animals, plants, and fungi depend on this humble tree, but its future—and theirs—is all but certain.
Latest Articles
Summaries of the presentations and posters shared during the Symposium in Knoxville, Tennessee
This new entry in our series on Oak Poetry was proposed by Hugo Ribeiro, IOS member from Portugal.
Latest Blog Posts
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.
A new article investigates patterns of geographic overlap—sympatry—in North American oak species.
Aljos Farjon FLS reports on the biodiversity of High Park, a wild section of Blenheim Park in Oxfordshire, England.
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.
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.
