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An admirable community effort in the town of Havelock North in New Zealand’s Hawke’s Bay has saved dozens of 80-year-old oaks that had been...
This report highlights two sites near the limits of the footprint of Quercus macrocarpa in north central North America: the Prairie...
An oak planted to commemorate the foundation of the city of Sacramento turned 80 this year, and the IOS has helped set the record straight...
Marcie Mayer’s new book, Eating Acorns, has soft “wipeable”covers that seem resistant to kitchen stains and acorn-flour fingerprints, ideal...
Fourteen participants mustered in Yorkshire, UK, on June 17th to commence the 2019 European Oak Open Days, having found their way from...
The Morton Arboretum is pleased to announce the release of the Conservation Gap Analysis of Native U.S. Oaks.
The Morton Arboretum, in collaboration with Botanic Gardens Conservation International U.S., are conducting a global ex-situ collections...
Stelian Radu, a founding member of the IOS, accomplished an impressive body of work in scientific research.
Originally described as a species, Quercus ×dysophylla is now considered to be of hybrid origin.
For over thirty years Bill Guion has pursued and photographed the live oaks of Louisiana.
Quercus look is one of the least-known oaks of the arid mountains of the Middle East. It grows on Mount Hermon and in the Anti-Lebanon...
Scientists in Poland have successfully micropropagated 500- to 800-year-old oaks and two of the saplings were planted in April.

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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

An admirable community effort in the town of Havelock North in New Zealand’s Hawke’s Bay has saved dozens of 80-year-old oaks that had been...
This report highlights two sites near the limits of the footprint of Quercus macrocarpa in north central North America: the Prairie...
An oak planted to commemorate the foundation of the city of Sacramento turned 80 this year, and the IOS has helped set the record straight...
Marcie Mayer’s new book, Eating Acorns, has soft “wipeable”covers that seem resistant to kitchen stains and acorn-flour fingerprints, ideal...
Fourteen participants mustered in Yorkshire, UK, on June 17th to commence the 2019 European Oak Open Days, having found their way from...
The Morton Arboretum is pleased to announce the release of the Conservation Gap Analysis of Native U.S. Oaks.
The Morton Arboretum, in collaboration with Botanic Gardens Conservation International U.S., are conducting a global ex-situ collections...
Stelian Radu, a founding member of the IOS, accomplished an impressive body of work in scientific research.
Originally described as a species, Quercus ×dysophylla is now considered to be of hybrid origin.
For over thirty years Bill Guion has pursued and photographed the live oaks of Louisiana.
Quercus look is one of the least-known oaks of the arid mountains of the Middle East. It grows on Mount Hermon and in the Anti-Lebanon...
Scientists in Poland have successfully micropropagated 500- to 800-year-old oaks and two of the saplings were planted in April.

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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