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Many trees have been lost due to an intense storm on May 15
Catalpa destroyed by tornado
Posted Mon, 2025-05-26 19:46 in Guy Sternberg's blog
What to know about participating in the IOS Seed Exchange
Posted Sun, 2022-04-17 01:08 in Guy Sternberg's blog
Guy Sternberg shares his photographs of the California Pre- and Post-Conference Tours.
california_ios_2018-auto-web_slide_1.jpg
Posted Sun, 2019-06-16 18:44 in Guy Sternberg's blog
This past year we lost three of our prominent, longtime members.
Posted Fri, 2014-02-07 11:03 in Guy Sternberg's blog

Editor's Picks

Yoko and John planting acorns
"Japanese oaks" planted at Coventry Cathedral
Steve Potter | Dec 21, 2025
Group with Quercus macdougallii
Six days exploring Oaxaca’s oak diversity, as reported by...
Wally Wilkins | Dec 10, 2025
One of the first planted circles on Hampton Common, London, in partnership  with Orleans House Gallery 2025.  © Studio Ackroyd & Harvey
Oaks planted in circles as a continuation of the artwork...
Steve Potter | Dec 10, 2025

Plant Focus

Champion Quercus castaneifolia in Iran
Chestnut-leaf oak in habitat and in cultivation

GuySternberg's blog

Many trees have been lost due to an intense storm on May 15
Catalpa destroyed by tornado
Posted Mon, 2025-05-26 19:46 in Guy Sternberg's blog
What to know about participating in the IOS Seed Exchange
Posted Sun, 2022-04-17 01:08 in Guy Sternberg's blog
Guy Sternberg shares his photographs of the California Pre- and Post-Conference Tours.
california_ios_2018-auto-web_slide_1.jpg
Posted Sun, 2019-06-16 18:44 in Guy Sternberg's blog
This past year we lost three of our prominent, longtime members.
Posted Fri, 2014-02-07 11:03 in Guy Sternberg's blog

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

Supporting Institutional Members

Standard Institutional Members

Rice University