Log in

You are here

The story of how the IOS logo came into being
A natural hybrid between Quercus lyrata (overcup oak) and Q. virginiana (Southern live oak)
First joint meeting of the Global Conservation Consortium for Oak (GCCO) in the Americas
Despite damage, the Lyytikkylä Oak is still the thickest oak in Finland
In Serbian tradition, in almost every village or hamlet there is at least one tree deemed by the inhabitants to be special.
Last March marked the 10 years since the death of Piers Trehane. It seemed a good opportunity to remember him and his contribution to the...
A Irish garden with a rich history intends to create an oak showcase
The Oak Conservation and Research Fund has selected three projects to receive awards
Conservation work focused on Alabama sandstone oak
A new publication fills a void
Emory oak acorns are a critically important commodity for Western Apache Tribes
A new five-year series of US Mint coins is based on the lifecycle of the oak

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

The story of how the IOS logo came into being
A natural hybrid between Quercus lyrata (overcup oak) and Q. virginiana (Southern live oak)
First joint meeting of the Global Conservation Consortium for Oak (GCCO) in the Americas
Despite damage, the Lyytikkylä Oak is still the thickest oak in Finland
In Serbian tradition, in almost every village or hamlet there is at least one tree deemed by the inhabitants to be special.
Last March marked the 10 years since the death of Piers Trehane. It seemed a good opportunity to remember him and his contribution to the...
A Irish garden with a rich history intends to create an oak showcase
The Oak Conservation and Research Fund has selected three projects to receive awards
Conservation work focused on Alabama sandstone oak
A new publication fills a void
Emory oak acorns are a critically important commodity for Western Apache Tribes
A new five-year series of US Mint coins is based on the lifecycle of the oak

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