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
Three-day event included visits to two parks in Berkshire...
Roderick Cameron
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Aug 18, 2024
Several abstracts included research involving Quercus.
Website Editor
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Aug 13, 2024
This five-day event included visits to four oak collections...
Website Editor
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Aug 12, 2024
Plant Focus
Animals, plants, and fungi depend on this humble tree, but its future—and theirs—is all but certain.
Latest Articles
Together with her husband Mark, Jolly helped establish and maintain the Oak Conservation and Research Fund, created by the IOS in 2019.
A new entry in our series on Oak Poetry, this poem by Antonio Machado describes the holm oaks of
Latest Blog Posts
Andrew Hipp talked to the legendary Joey Santore (the naturalist and communicator behind the “Crime Pays But Botany Doesn’t” YouTube chan
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.
Santiago Reyna has selected a bushy holm oak with attractive maroon-burgundy leaves.
Upcoming Events
Oct 11, 2024 to Oct 18, 2024
A Tour of the oak delights in North and South Carolina
Oct 21, 2024 to Oct 29, 2024
Due to the consequences of the April 3 earthquake, we have been obliged to cancel this event.
May 08, 2025 to May 11, 2025
This multiday event will include visits to oak collections in Victoria, New South Wales, and Canberra.
May 17, 2025 to May 18, 2025
This two-day event will feature visits to legendary Hackfalls Arboretum and Eastwoodhill Arboretum, the National Arboretum of New Zealand.
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.
