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Àlan Olmedo has been documenting cork oak hybrids in northeastern Spain
"Japanese oaks" planted at Coventry Cathedral
A heavily pruned oak as an image of endurance, renewal, and the stubborn will to keep growing despite hardship
A California Master Arborist and oak expert extraordinaire
The IOS received the sad news that longtime member James Harris died on 29 September 2025
Six days exploring Oaxaca’s oak diversity, as reported by Wally Wilkins.
From Morelia to Oaxaca in the lead-up to the Conference
Oaks planted in circles as a continuation of the artwork initiated by Joseph Beuys in the 1980s.
If you love oaks, you need this book.
Chestnut-leaf oak in habitat and in cultivation
The Symposium "Mexican Oaks: Current State of Knowledge about Quercus and its Conservation" was held on September 1, 2025.
A human life and an oak through the seasons

Pages

Editor's Picks

Quercus coccifera, 97 cm dbh and 15 m canopy spread
Images and insights from Ezra Barnea’s journey to Cyprus’s...
Ezra Barnea | Jun 13, 2026
Lainey Kirshberger and Ryan Silver, students at Oklahoma State University, participated in the fieldwork and will lead the genetic and epigenetic analysis under the supervision of Dr. Antonio R. Castilla.
Endangered oak Quercus hinckleyi shows strong genetic...
Website Editor | Jun 09, 2026
The current Red List status and modelled outlook for the eight Californian oak species, plus tanoak
New paper should significantly change our approach to...
Steve Potter | Jun 09, 2026

Plant Focus

Quercus orocantabrica
Roderick Cameron and Carlos Vila-Viçosa give an account of this intriguing species from northwestern Iberia with a complex taxonomic and...

All Articles

Àlan Olmedo has been documenting cork oak hybrids in northeastern Spain
"Japanese oaks" planted at Coventry Cathedral
A heavily pruned oak as an image of endurance, renewal, and the stubborn will to keep growing despite hardship
A California Master Arborist and oak expert extraordinaire
The IOS received the sad news that longtime member James Harris died on 29 September 2025
Six days exploring Oaxaca’s oak diversity, as reported by Wally Wilkins.
From Morelia to Oaxaca in the lead-up to the Conference
Oaks planted in circles as a continuation of the artwork initiated by Joseph Beuys in the 1980s.
If you love oaks, you need this book.
Chestnut-leaf oak in habitat and in cultivation
The Symposium "Mexican Oaks: Current State of Knowledge about Quercus and its Conservation" was held on September 1, 2025.
A human life and an oak through the seasons

Pages

The International Oak Society acknowledges the generous support of the following institutions:

Supporting Institutional Members

 

Standard Institutional Members

Rice University
San Diego Botanic Garden logo
San Diego Zoo Wildlife Alliance logo
South Carolina Botanical Garden

 

The Huntington
The John Fairey Garden