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From Davis to Los Angeles
From Los Angeles to the Otay Mountains
Partners at The Morton Arboretum, in collaboration with members of the Global Conservation Consortium for Oak (GCCO), recently published...
Publication now available online
Summaries of the presentations and posters shared during the Symposium in Knoxville, Tennessee
An account of 50 of the 64 protected oaks in Serbia
Oak Origins: From Acorns to Species and the Tree of Life will be published in December
This new entry in our series on Oak Poetry was proposed by Hugo Ribeiro, IOS member from Portugal.
Three-day event included visits to two parks in Berkshire and two gardens in West Sussex
Two proposals to conserve names of oaks were ratified at the International Botanical Congress held in Madrid in July
Several abstracts included research involving Quercus.
This five-day event included visits to four oak collections in southwestern France and one across the border in Spain. 

Pages

Editor's Picks

Past IOS President Allen Coombes, Curator of Scientific Collections at Puebla University Botanic Garden, discusses leaf variability in Quercus ceirpes (still image from the documentary)
A new documentary by Maricela Rodríguez Acosta
Website Editor | Feb 17, 2026
Quercus miyagii acorn and dried leaves
A rare oak endemic to the Ryukyu Islands of Japan
Elion Jam | Feb 16, 2026
A moss-covered oak (Quercus orocantabrica) in Mata de Albergaria, Peneda-Gerês National Park, Portugal  © Amit Zoran
Steve Potter reviews a new book that features oaks
Steve Potter | Feb 11, 2026

Plant Focus

Quercus canariensis in Cornwall Park, Epsom, Auckland, New Zealand, the champion specimen in New Zealand, planted in the 1920s, 27.2 m tall with a trunk diameter of 209 cm (G. Collett pers. comm. 2026)  © Gerald Collett
Antonio Lambe shares his views on this threatened oak native to Iberia and North Africa

All Articles

From Davis to Los Angeles
From Los Angeles to the Otay Mountains
Partners at The Morton Arboretum, in collaboration with members of the Global Conservation Consortium for Oak (GCCO), recently published...
Publication now available online
Summaries of the presentations and posters shared during the Symposium in Knoxville, Tennessee
An account of 50 of the 64 protected oaks in Serbia
Oak Origins: From Acorns to Species and the Tree of Life will be published in December
This new entry in our series on Oak Poetry was proposed by Hugo Ribeiro, IOS member from Portugal.
Three-day event included visits to two parks in Berkshire and two gardens in West Sussex
Two proposals to conserve names of oaks were ratified at the International Botanical Congress held in Madrid in July
Several abstracts included research involving Quercus.
This five-day event included visits to four oak collections in southwestern France and one across the border in Spain. 

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