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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

Group photo at Mereweather Arboretum
Oak collections and much more in Canberra, New South Wales...
Website Editor | Aug 11, 2025
A controversial publication proposes to change the...
Roderick Cameron | Aug 05, 2025
Group photo with champion Quercus arkansana in Bokrijk Arboretum
A team of reporters share their take on the event.
Website Editor | Jun 22, 2025

Plant Focus

Quercus ×bimundorum ‘Crimschmidt’ growing in the Prairie Arboretum, Freeman, South Dakota, USA © Dirk GiseburtQuercus ×bimundorum ‘Crimschmidt’ growing in the Prairie Arboretum, Freeman, South Dakota, USA © Dirk Giseburt
A naturally occurring hybrid between Quercus robur and Q. alba.

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