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An Ansel Adams photograph is featured on a postage stamp.
Stamp with Ansel Adams' Oak Tree, Sunset City
Posted Fri, 2024-12-13 15:59 in Roderick Cameron's blog
A beautiful and sonorous name has sunk into synonymy.
20240927_115114.jpg
Posted Thu, 2024-10-31 00:50 in Roderick Cameron's blog
Andrew Hipp talked to the legendary Joey Santore about genus Quercus.
Crime Pays But Botany Doesn't lgo
Posted Fri, 2024-08-23 18:41 in Website Editor's blog
The oak depicted on the new coin is a challenge to identify.
New 5p coin - Image: The Royal Mint
Posted Wed, 2024-08-21 12:54 in Steve Potter's blog
A new article investigates patterns of geographic overlap—sympatry—in North American oak species.
Figure from syngameon article
Posted Tue, 2024-08-13 16:14 in Andrew Hipp's blog
Aljos Farjon FLS reports on the biodiversity of High Park, a wild section of Blenheim Park in Oxfordshire, England.
Ancient Oaks and Biodiveresity page 1
Posted Fri, 2024-06-28 15:47 in Website Editor's blog
Santiago Reyna has selected a bushy holm oak with attractive maroon-burgundy leaves.
Burgundy leaves on Q. rotundifolia
Posted Fri, 2024-06-28 13:07 in Roderick Cameron's blog
We all know the best you can do with an acorn (turn it into an oak), but what can we do with a cupule? One answer is: whistle! It is a good skill to learn.
Acorn cap whistler in Extremadura
Posted Wed, 2024-04-17 21:33 in Roderick Cameron's blog
IOS member David Cranwell shared with us a bulletin about his work growing Quercus leucotrichophora in New Zealand.
Posted Tue, 2024-04-16 21:51 in Website Editor's blog
IOS member Christy Powell, Horticulture Manager at San Diego Zoo Wildlife Alliance, shared an inspiring news story.
Posted Mon, 2024-04-15 22:23 in Website Editor's blog
I recently had the opportunity of visiting the US National Champion Quercus robusta.
National Champion Quercus robusta
Posted Mon, 2024-04-15 18:37 in Michael Eason's blog
It was a great pleasure for me to be able to write about my 31 years of involvement with Arboretum Trompenburg in Rotterdam.
Pages from Gert's book
Posted Thu, 2024-02-15 12:55 in Gert Fortgens's blog

Pages

Editor's Picks

Quercus coccifera, 97 cm dbh and 15 m canopy spread
Images and insights from Ezra Barnea’s journey to Cyprus’s...
Ezra Barnea | Jun 13, 2026
Lainey Kirshberger and Ryan Silver, students at Oklahoma State University, participated in the fieldwork and will lead the genetic and epigenetic analysis under the supervision of Dr. Antonio R. Castilla.
Endangered oak Quercus hinckleyi shows strong genetic...
Website Editor | Jun 09, 2026
The current Red List status and modelled outlook for the eight Californian oak species, plus tanoak
New paper should significantly change our approach to...
Steve Potter | Jun 09, 2026

Plant Focus

Quercus orocantabrica
Roderick Cameron and Carlos Vila-Viçosa give an account of this intriguing species from northwestern Iberia with a complex taxonomic and...

Blogs

An Ansel Adams photograph is featured on a postage stamp.
Stamp with Ansel Adams' Oak Tree, Sunset City
Posted Fri, 2024-12-13 15:59 in Roderick Cameron's blog
A beautiful and sonorous name has sunk into synonymy.
20240927_115114.jpg
Posted Thu, 2024-10-31 00:50 in Roderick Cameron's blog
Andrew Hipp talked to the legendary Joey Santore about genus Quercus.
Crime Pays But Botany Doesn't lgo
Posted Fri, 2024-08-23 18:41 in Website Editor's blog
The oak depicted on the new coin is a challenge to identify.
New 5p coin - Image: The Royal Mint
Posted Wed, 2024-08-21 12:54 in Steve Potter's blog
A new article investigates patterns of geographic overlap—sympatry—in North American oak species.
Figure from syngameon article
Posted Tue, 2024-08-13 16:14 in Andrew Hipp's blog
Aljos Farjon FLS reports on the biodiversity of High Park, a wild section of Blenheim Park in Oxfordshire, England.
Ancient Oaks and Biodiveresity page 1
Posted Fri, 2024-06-28 15:47 in Website Editor's blog
Santiago Reyna has selected a bushy holm oak with attractive maroon-burgundy leaves.
Burgundy leaves on Q. rotundifolia
Posted Fri, 2024-06-28 13:07 in Roderick Cameron's blog
We all know the best you can do with an acorn (turn it into an oak), but what can we do with a cupule? One answer is: whistle! It is a good skill to learn.
Acorn cap whistler in Extremadura
Posted Wed, 2024-04-17 21:33 in Roderick Cameron's blog
IOS member David Cranwell shared with us a bulletin about his work growing Quercus leucotrichophora in New Zealand.
Posted Tue, 2024-04-16 21:51 in Website Editor's blog
IOS member Christy Powell, Horticulture Manager at San Diego Zoo Wildlife Alliance, shared an inspiring news story.
Posted Mon, 2024-04-15 22:23 in Website Editor's blog
I recently had the opportunity of visiting the US National Champion Quercus robusta.
National Champion Quercus robusta
Posted Mon, 2024-04-15 18:37 in Michael Eason's blog
It was a great pleasure for me to be able to write about my 31 years of involvement with Arboretum Trompenburg in Rotterdam.
Pages from Gert's book
Posted Thu, 2024-02-15 12:55 in Gert Fortgens's blog

Pages

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

Supporting Institutional Members

 

Standard Institutional Members

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

 

The Huntington
The John Fairey Garden