A young and vigorously growing Quercus ‘Maya’ that we planted in 2007 showed a minor crack at the base of the trunk after the winter of 2011-2012...
Posted Thu, 2018-02-15 17:45 in Trompenburg Gardens and Arboretum's blog
In the Trompenburg Arboretum archive, where we keep our letters, I recently found a letter from Heino Heine dating back to 1973. Attached to it was a postcard and herbarium specimens of Quercus...
Posted Tue, 2017-03-21 16:10 in Trompenburg Gardens and Arboretum's blog
A hybrid selected at Trompenburg Arboretum has parents that are oceans apart, yet closely related.
Posted Fri, 2016-04-01 18:23 in Trompenburg Gardens and Arboretum's blog
The IOS has been invited to view the collections of two of our members in Ireland: that of Sir Brendan Parsons, the Earl of Rosse, at Birr Castle; and that of Johnny Couchman, near Carlow. There...
Posted Thu, 2016-03-31 14:38 in Trompenburg Gardens and Arboretum's blog
Peter Young's book Oak and an anecdote about South African oaks.
Posted Sat, 2015-05-23 20:14 in Trompenburg Gardens and Arboretum's blog
Very unexpectedly, in her home in Klein Zundert, The Netherlands, Jo Bömer passed away on March 4th 2015.
Posted Thu, 2015-03-12 21:55 in Trompenburg Gardens and Arboretum's blog
A brief trip to Taiwan viewing Fagaceae.
Posted Tue, 2014-12-02 11:45 in Trompenburg Gardens and Arboretum's blog
Editor's Picks
Oak collections and much more in Canberra, New South Wales...
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Aug 11, 2025
A controversial publication proposes to change the...
Roderick Cameron
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Aug 05, 2025
A team of reporters share their take on the event.
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Jun 22, 2025
Plant Focus
A naturally occurring hybrid between Quercus robur and Q. alba.
A young and vigorously growing Quercus ‘Maya’ that we planted in 2007 showed a minor crack at the base of the trunk after the winter of 2011-2012...
Posted Thu, 2018-02-15 17:45 in Trompenburg Gardens and Arboretum's blog
In the Trompenburg Arboretum archive, where we keep our letters, I recently found a letter from Heino Heine dating back to 1973. Attached to it was a postcard and herbarium specimens of Quercus...
Posted Tue, 2017-03-21 16:10 in Trompenburg Gardens and Arboretum's blog
A hybrid selected at Trompenburg Arboretum has parents that are oceans apart, yet closely related.
Posted Fri, 2016-04-01 18:23 in Trompenburg Gardens and Arboretum's blog
The IOS has been invited to view the collections of two of our members in Ireland: that of Sir Brendan Parsons, the Earl of Rosse, at Birr Castle; and that of Johnny Couchman, near Carlow. There...
Posted Thu, 2016-03-31 14:38 in Trompenburg Gardens and Arboretum's blog
Peter Young's book Oak and an anecdote about South African oaks.
Posted Sat, 2015-05-23 20:14 in Trompenburg Gardens and Arboretum's blog
Very unexpectedly, in her home in Klein Zundert, The Netherlands, Jo Bömer passed away on March 4th 2015.
Posted Thu, 2015-03-12 21:55 in Trompenburg Gardens and Arboretum's blog
A brief trip to Taiwan viewing Fagaceae.
Posted Tue, 2014-12-02 11:45 in Trompenburg Gardens and Arboretum's blog
The International Oak Society acknowledges the generous support of the following institutions:
Supporting Institutional Members
Standard Institutional Members
The International Oak Society acknowledges the generous support of the following institutions:
Supporting Institutional Members
Standard Institutional Members
