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North American oaks have a northern temperate origin and only later colonized Mexico and Central America, according to a new study. 
Our German speaking members will be interested to learn that a new book on giant oaks in Germany was published in September 2017: Riesige...
Bernard de La Rochefoucauld, long-time IOS member with his wife Brigitte, founder of l’Arboretum des Grandes Bruyères, died July 18, 2017,...
The International Oak Society celebrates its 25th anniversary at Starhill Forest Arboretum.
The Morton Arboretum and the Botanic Garden at the Benemérita Universidad Autónoma de Puebla hosted a Rare Mexican Oak Taxonomy Workshop,...
One-fourth of the United States’ oak species are now considered of conservation concern, according to data compiled by researchers at The...
This article is an account of the oak field trip organized by Michael Meléndrez in New Mexico (and a bit of Arizona) in August 2017. 
There are more ancient oaks in England than in all of continental Europe. How is that possible? One would expect to find the reasons in...
ArbNet is an interactive community of arboreta, sponsored and coordinated by The Morton Arboretum in cooperation with the American Public...
As we celebrate 25 years of the IOS, we take a look at oaks that have an association with silver. In a Species Spotlight Joeri Strijk...
An acorn from a specimen of Quercus insignis growing in Hackfalls Arboretum in New Zealand germinated earlier this year.
Twenty-six participants from ten countries arrived to take part in the European celebration of the IOS’s twenty-fifth birthday at Dušan...

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Editor's Picks

Michel Gandoger
While working on a list of synonyms of European White...
Roderick Cameron | Aug 24, 2026
Cover of Select Native Asian Oaks Gap Analysis
Report led by The Morton Arboretum will help prioritize oak...
Website Editor | Aug 06, 2026
A1's 2024 crop of acorns
Motivation I live in the village of Dolné Dubové...
Jozef Čapkovič | Jul 20, 2026

Plant Focus

Quercus afares, Kew, © James MacEwen
The only oak species endemic to Africa is rare in cultivation. It shouldn't be.

All Articles

North American oaks have a northern temperate origin and only later colonized Mexico and Central America, according to a new study. 
Our German speaking members will be interested to learn that a new book on giant oaks in Germany was published in September 2017: Riesige...
Bernard de La Rochefoucauld, long-time IOS member with his wife Brigitte, founder of l’Arboretum des Grandes Bruyères, died July 18, 2017,...
The International Oak Society celebrates its 25th anniversary at Starhill Forest Arboretum.
The Morton Arboretum and the Botanic Garden at the Benemérita Universidad Autónoma de Puebla hosted a Rare Mexican Oak Taxonomy Workshop,...
One-fourth of the United States’ oak species are now considered of conservation concern, according to data compiled by researchers at The...
This article is an account of the oak field trip organized by Michael Meléndrez in New Mexico (and a bit of Arizona) in August 2017. 
There are more ancient oaks in England than in all of continental Europe. How is that possible? One would expect to find the reasons in...
ArbNet is an interactive community of arboreta, sponsored and coordinated by The Morton Arboretum in cooperation with the American Public...
As we celebrate 25 years of the IOS, we take a look at oaks that have an association with silver. In a Species Spotlight Joeri Strijk...
An acorn from a specimen of Quercus insignis growing in Hackfalls Arboretum in New Zealand germinated earlier this year.
Twenty-six participants from ten countries arrived to take part in the European celebration of the IOS’s twenty-fifth birthday at Dušan...

Pages

The International Oak Society acknowledges the generous support of the following institutions:

Supporting Institutional Members

The John Fairey Garden

Standard Institutional Members

Bartlett Tree Experts logo
Catalina Island Conservancy logo
Forrest Keeling Nursery logo
Houston Botanic Garden logo
KOAGI logo
Oak Spring Foundation
Rice University
San Diego Botanic Garden logo
San Diego Zoo Wildlife Alliance logo
South Carolina Botanical Garden
The Huntington