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An Estonian oak that stands in the middle of a sports stadium has won the European Tree of the Year contest.
Scientists from The Morton Arboretum and Chicago Botanic Garden are  conducting a conservation genetics project to compare levels of...
Gallipoli oaks are being planted to commemorate First World War Centenary.
A brief survey of notable oaks at Anlaby, currently the largest collection of National Trust registered heritage trees in one location...
Seeking alternatives for adding rare oaks to collections.
A Mediterranean oak with a long-standing relationship with humanity.
An English oak planted in Adelaide, Australia, shortly after the outbreak of World War 1, may be the first living memorial of the Great War...
Oak by Peter Young: the second volume of a series intended to integrate horticultural and botanical writing with a broader account of the...
IOS Board member Gert Fortgens welcomed around 30 participants to a most enjoyable two-day "Oak Open Days" event at Trompenburg Arboretum...
Aubrey Streit Krug's review of IOS member Jack Phillips' book.
A restoration project that will be of interest to IOS members is taking place in the Australian state of Victoria. A plantation of valonia...
Andrea Jones is one of the world's foremost garden photographers, whose pictures have appeared in many books, magazines and newspapers...

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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

An Estonian oak that stands in the middle of a sports stadium has won the European Tree of the Year contest.
Scientists from The Morton Arboretum and Chicago Botanic Garden are  conducting a conservation genetics project to compare levels of...
Gallipoli oaks are being planted to commemorate First World War Centenary.
A brief survey of notable oaks at Anlaby, currently the largest collection of National Trust registered heritage trees in one location...
Seeking alternatives for adding rare oaks to collections.
A Mediterranean oak with a long-standing relationship with humanity.
An English oak planted in Adelaide, Australia, shortly after the outbreak of World War 1, may be the first living memorial of the Great War...
Oak by Peter Young: the second volume of a series intended to integrate horticultural and botanical writing with a broader account of the...
IOS Board member Gert Fortgens welcomed around 30 participants to a most enjoyable two-day "Oak Open Days" event at Trompenburg Arboretum...
Aubrey Streit Krug's review of IOS member Jack Phillips' book.
A restoration project that will be of interest to IOS members is taking place in the Australian state of Victoria. A plantation of valonia...
Andrea Jones is one of the world's foremost garden photographers, whose pictures have appeared in many books, magazines and newspapers...

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