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Last year, Sylvia and I went on a three-day holiday to visit some friends who own a camping site near the city of Bitburg (where the famous beer Bitburger comes from) in Germany, a three-hour...
Posted Mon, 2015-11-23 21:18 in Jeroen Braakman's blog
Ever since I was interested in oaks, there was one species most desirable for me, and for many other people interested in oaks: Quercus insignis  M. Martens & Galeotti (1843).
Posted Sat, 2015-05-23 12:24 in Jeroen Braakman's blog
The Oak Open Days at Trompenburg were a great success, with interesting lectures and garden walks among the Netherlands Plant Collection for Quercus in Rotterdam.
Posted Sun, 2014-10-12 20:41 in Jeroen Braakman's blog
Seedlings from the acorns collected during the 2012 Conference Tours.
Posted Fri, 2014-07-11 14:32 in Jeroen Braakman's blog

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

DutchOakman's blog

Last year, Sylvia and I went on a three-day holiday to visit some friends who own a camping site near the city of Bitburg (where the famous beer Bitburger comes from) in Germany, a three-hour...
Posted Mon, 2015-11-23 21:18 in Jeroen Braakman's blog
Ever since I was interested in oaks, there was one species most desirable for me, and for many other people interested in oaks: Quercus insignis  M. Martens & Galeotti (1843).
Posted Sat, 2015-05-23 12:24 in Jeroen Braakman's blog
The Oak Open Days at Trompenburg were a great success, with interesting lectures and garden walks among the Netherlands Plant Collection for Quercus in Rotterdam.
Posted Sun, 2014-10-12 20:41 in Jeroen Braakman's blog
Seedlings from the acorns collected during the 2012 Conference Tours.
Posted Fri, 2014-07-11 14:32 in Jeroen Braakman's blog

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

Supporting Institutional Members

 

Standard Institutional Members

Rice University
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San Diego Zoo Wildlife Alliance logo
South Carolina Botanical Garden

 

The Huntington
The John Fairey Garden