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Oak Poetry
Plant Focus
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Trip Reports
Webinar Reports
"Oaks: the Backbone of Mexico" – New Documentary Film
A new documentary by Maricela Rodríguez Acosta
Read more
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)
Society News
By Website Editor
Feb 17, 2026
Oaks and Climate Change: A New Research Paper
IOS member Elif Deniz Ülker has co-authored a paper on the likely future range of six European oaks
Read more
Modeled distributions of temperate-zone species (Quercus robur and Q. petraea) under climatic conditions of the Last Glacial Maximum (~22,000 years before present), the Present, and future projections (2081-2100) under SSP1-2.6 and SSP5-8.5 scenarios.
Dendrology
By Editorial Staff
Feb 16, 2026
Species Spotlight: Quercus canariensis Willd.
Antonio Lambe shares his views on this threatened oak native to Iberia and North Africa
Read more
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
Plant Focus
By Antonio Lambe
Feb 16, 2026
In Search of Quercus miyagii: A Field Report from Okinawa
A rare oak endemic to the Ryukyu Islands of Japan
Read more
Quercus miyagii acorn and dried leaves
Trip Reports
By Elion Jam
Feb 16, 2026
Amit Zohran's "Oakollective"
Steve Potter reviews a new book that features oaks
Read more
A moss-covered oak (Quercus orocantabrica) in Mata de Albergaria, Peneda-Gerês National Park, Portugal © Amit Zoran
Book Reviews
By Steve Potter
Feb 11, 2026
Hybrid Highlight: Surolins – Quercus suber hybrids in Catalonia
Àlan Olmedo has been documenting cork oak hybrids in northeastern Spain
Read more
Map of the comarcas of Catalonia indicating the presence of Quercus suber hybrids
Plant Focus
By Àlan Olmedo
Feb 9, 2026
Yoko’s Oaks
"Japanese oaks" planted at Coventry Cathedral
Read more
Yoko and John planting acorns
Historic Oaks
By Steve Potter
Dec 21, 2025
“Gestutzte Eiche” by Hermann Hesse
A heavily pruned oak as an image of endurance, renewal, and the stubborn will to keep growing despite hardship
Read more
Herman Hesse
Oak Poetry
By Website Editor
Dec 18, 2025
In Memoriam: David J. Muffly (1965–2025)
A California Master Arborist and oak expert extraordinaire
Read more
Dave Muffly
Society News
By Emily Griswold
Dec 17, 2025
In Memoriam: James Harris (1933–2025)
The IOS received the sad news that longtime member James Harris died on 29 September 2025
Read more
James Harris with fellow Tour participant Bonnie Berckes on the second Post-Conference Tour in 2018 © Charles Snyers
Society News
By Editorial Staff
Dec 11, 2025
Post-Conference Tour: Oaxaca
Six days exploring Oaxaca’s oak diversity, as reported by Wally Wilkins.
Read more
Group with Quercus macdougallii
Trip Reports
By Wally Wilkins
Dec 10, 2025
Pre-Conference Tour: Morelia, Guanajuato, Puebla, and Veracruz
From Morelia to Oaxaca in the lead-up to the Conference
Read more
Group photo at Xalapa BG
Trip Reports
By John Leszczynski
Dec 10, 2025

Pages

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)
"Oaks: the Backbone of Mexico" – New Documentary Film
A new documentary by Maricela Rodríguez Acosta
Website Editor | Feb 17, 2026
Quercus miyagii acorn and dried leaves
In Search of Quercus miyagii: A Field Report from Okinawa
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
Amit Zohran's "Oakollective"
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
Species Spotlight: Quercus canariensis Willd.
Antonio Lambe shares his views on this threatened oak native to Iberia and North Africa
Read more

All Articles

Book Reviews
Conversations with Conservationists
Dendrology
Gardens & Arboreta
Historic Oaks
Oak Artists
Oak Nomenclature
Oak Open Days
Oak Poetry
Plant Focus
Society News
Trip Reports
Webinar Reports
"Oaks: the Backbone of Mexico" – New Documentary Film
A new documentary by Maricela Rodríguez Acosta
Read more
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)
Society News
By Website Editor
Feb 17, 2026
Oaks and Climate Change: A New Research Paper
IOS member Elif Deniz Ülker has co-authored a paper on the likely future range of six European oaks
Read more
Modeled distributions of temperate-zone species (Quercus robur and Q. petraea) under climatic conditions of the Last Glacial Maximum (~22,000 years before present), the Present, and future projections (2081-2100) under SSP1-2.6 and SSP5-8.5 scenarios.
Dendrology
By Editorial Staff
Feb 16, 2026
Species Spotlight: Quercus canariensis Willd.
Antonio Lambe shares his views on this threatened oak native to Iberia and North Africa
Read more
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
Plant Focus
By Antonio Lambe
Feb 16, 2026
In Search of Quercus miyagii: A Field Report from Okinawa
A rare oak endemic to the Ryukyu Islands of Japan
Read more
Quercus miyagii acorn and dried leaves
Trip Reports
By Elion Jam
Feb 16, 2026
Amit Zohran's "Oakollective"
Steve Potter reviews a new book that features oaks
Read more
A moss-covered oak (Quercus orocantabrica) in Mata de Albergaria, Peneda-Gerês National Park, Portugal © Amit Zoran
Book Reviews
By Steve Potter
Feb 11, 2026
Hybrid Highlight: Surolins – Quercus suber hybrids in Catalonia
Àlan Olmedo has been documenting cork oak hybrids in northeastern Spain
Read more
Map of the comarcas of Catalonia indicating the presence of Quercus suber hybrids
Plant Focus
By Àlan Olmedo
Feb 9, 2026
Yoko’s Oaks
"Japanese oaks" planted at Coventry Cathedral
Read more
Yoko and John planting acorns
Historic Oaks
By Steve Potter
Dec 21, 2025
“Gestutzte Eiche” by Hermann Hesse
A heavily pruned oak as an image of endurance, renewal, and the stubborn will to keep growing despite hardship
Read more
Herman Hesse
Oak Poetry
By Website Editor
Dec 18, 2025
In Memoriam: David J. Muffly (1965–2025)
A California Master Arborist and oak expert extraordinaire
Read more
Dave Muffly
Society News
By Emily Griswold
Dec 17, 2025
In Memoriam: James Harris (1933–2025)
The IOS received the sad news that longtime member James Harris died on 29 September 2025
Read more
James Harris with fellow Tour participant Bonnie Berckes on the second Post-Conference Tour in 2018 © Charles Snyers
Society News
By Editorial Staff
Dec 11, 2025
Post-Conference Tour: Oaxaca
Six days exploring Oaxaca’s oak diversity, as reported by Wally Wilkins.
Read more
Group with Quercus macdougallii
Trip Reports
By Wally Wilkins
Dec 10, 2025
Pre-Conference Tour: Morelia, Guanajuato, Puebla, and Veracruz
From Morelia to Oaxaca in the lead-up to the Conference
Read more
Group photo at Xalapa BG
Trip Reports
By John Leszczynski
Dec 10, 2025

Pages

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

Supporting Institutional Members

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The Morton Arboretum logo
San Antonio Botanical Garden logo

 

Standard Institutional Members

Bartlett Tree Experts logo
Catalina Island Conservancy logo
Forrest Keeling Nursery logo
Houston Botanic Garden logo
Rice University
San Diego Botanic Garden logo
San Diego Zoo Wildlife Alliance logo
South Carolina Botanical Garden

 

The Huntington
The John Fairey Garden