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Service awards recognize contributions to genus Quercus and to the IOS
San Antonio to Las Cruces: oaks and more
Oaks and other attractions, from Albuquerque to Las Cruces.
Four days with the oaks of Arizona
The traditional triennial gathering took place in the shadows of the Organ Mountains.
An oak found only on a volcano in Costa Rica
A single specimen found!
Fire takes the National Champion Gray Oak
Importing acorns for ex-situ conservation
A threatened oak found in northern Arizona and southern Utah.
Czech artist Petr Václavek has created a fantasy world inhabited by little creatures made from acorns and oak twigs
Our third post of poems featuring oaks again has Quercus virginiana (southern live oak) as its theme, this time in a poem by Walt Whitman.

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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

Service awards recognize contributions to genus Quercus and to the IOS
San Antonio to Las Cruces: oaks and more
Oaks and other attractions, from Albuquerque to Las Cruces.
Four days with the oaks of Arizona
The traditional triennial gathering took place in the shadows of the Organ Mountains.
An oak found only on a volcano in Costa Rica
A single specimen found!
Fire takes the National Champion Gray Oak
Importing acorns for ex-situ conservation
A threatened oak found in northern Arizona and southern Utah.
Czech artist Petr Václavek has created a fantasy world inhabited by little creatures made from acorns and oak twigs
Our third post of poems featuring oaks again has Quercus virginiana (southern live oak) as its theme, this time in a poem by Walt Whitman.

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