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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.
Laurent Charbonnier and Michel Seydoux spend a year with a magnificent oak tree to document its inhabitants.
In a meadow in the parish of Sēme, municipality of Tukums, Latvia, some 500 m from Kaive Manor, stands the Kaive Oak.
A shrub oak from the U.S. Southwest
The second in a new series of posts of poems featuring oaks. Eric Ormsby's poem focuses on Quercus virginiana (southern live oak).
Boyce Thompson Arboretum is the oldest and largest botanical garden in the state of Arizona.
A section Lobatae oak found in southern Texas may be a distinct, undescribed species.
An update on the diversity of the oaks in Aiken, South Carolina.

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

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.
Laurent Charbonnier and Michel Seydoux spend a year with a magnificent oak tree to document its inhabitants.
In a meadow in the parish of Sēme, municipality of Tukums, Latvia, some 500 m from Kaive Manor, stands the Kaive Oak.
A shrub oak from the U.S. Southwest
The second in a new series of posts of poems featuring oaks. Eric Ormsby's poem focuses on Quercus virginiana (southern live oak).
Boyce Thompson Arboretum is the oldest and largest botanical garden in the state of Arizona.
A section Lobatae oak found in southern Texas may be a distinct, undescribed species.
An update on the diversity of the oaks in Aiken, South Carolina.

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