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Jeff Stevens, 63, of Apison, Tennessee, USA passed away September 26, 2021.
William "Bill" J. Hess, 87, of Crossville, Tennessee, USA passed away on June 11, 2021.
Check out the page of the GCC for Oak.
The virtual Conference held last month was a resounding success.
A gold-leaf cultivar of a Japanese oak is popular in Australia
Boissier oak was originally named Quercus boissieri Reut. and later Quercus boissieri var. latifolia (Boiss.) Zohary, but the current...
A new study sheds light on why some oaks survived a recent multi-year outbreak of an invasive moth
The oak collection includes over 80 taxa
An attempt to settle the matter of this controversial name
Dr. Suresh Subedi, Assistant Professor at Arkansas Tech University, presented an ongoing project that analyzes herbarium specimens of oaks...
A guest article from renowned author Douglas Tallamy describes the key role native oaks play in sustaining biodiversity.
The Morton Arboretum and United States Botanic Garden (USBG) announce a new partnership to advance the conservation of threatened trees in...

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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

Jeff Stevens, 63, of Apison, Tennessee, USA passed away September 26, 2021.
William "Bill" J. Hess, 87, of Crossville, Tennessee, USA passed away on June 11, 2021.
Check out the page of the GCC for Oak.
The virtual Conference held last month was a resounding success.
A gold-leaf cultivar of a Japanese oak is popular in Australia
Boissier oak was originally named Quercus boissieri Reut. and later Quercus boissieri var. latifolia (Boiss.) Zohary, but the current...
A new study sheds light on why some oaks survived a recent multi-year outbreak of an invasive moth
The oak collection includes over 80 taxa
An attempt to settle the matter of this controversial name
Dr. Suresh Subedi, Assistant Professor at Arkansas Tech University, presented an ongoing project that analyzes herbarium specimens of oaks...
A guest article from renowned author Douglas Tallamy describes the key role native oaks play in sustaining biodiversity.
The Morton Arboretum and United States Botanic Garden (USBG) announce a new partnership to advance the conservation of threatened trees in...

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