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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
IOS Holds Its Inaugural Virtual Event
An account of IOS Webinar #1
Read more
screenshot_valerie_pence_presentation_2.jpg
Webinar Reports
By Nikola Šušić
Oct 20, 2023
IOS Tour of Oregon, September 2023
An account of the Tour guided by Sean Hogan
Read more
Tour Participants on Fiddler Peak
Trip Reports
By Website Editor
Oct 19, 2023
The Oak Collection at Santa Barbara Botanic Garden
A collection specializing in native Californian oaks
Read more
Quercus pacifica
Gardens & Arboreta
By Christina Varnava
Oct 18, 2023
Oak Open Days in Wales: Penrice and Glanusk
First OODs since 2019 held in the UK
Read more
Discussing remedial pruning at Penrice © Sairus Patel
Oak Open Days
By Roderick Cameron
Aug 15, 2023
The World’s Northernmost Oak?
An oak grows north of the Arctic Circle in Norway
Read more
The oak tree in Skjomendalen © Gerhard Sørensen-Fuglem and Cecilia Piccirilli Bjerkeset
Dendrology
By Website Editor
Aug 14, 2023
Species Spotlight: Quercus boyntonii
A Critically Endangered dwarf oak 
Read more
A small but mature Alabama sandstone oak producing acorns © Patrick Thompson
Plant Focus
By Website Editor
Aug 11, 2023
Not Another Oak Calamity…
Symptoms linked to phytoplasma infection found in Quercus humboldtii in Colombia
Read more
Unusual symptoms linked to phytoplasma infection in Quercus humboldtiii, Colombia © Eric Boa
Dendrology
By Website Editor
Aug 6, 2023
The Royal Oaks of Penrice Castle, Wales
What species of oak were planted by Royals at Penrice?
Read more
Miss Emily Talbot helps plant an oak (number 1 or 2, Quercus ×rosacea aff. robur), 1904; image courtesy Thomas Methuen-Campbell
Dendrology
By Steve Potter
Aug 6, 2023
Conservation of Fagaceae Forests of Southeastern Taiwan: Update
Latest news on Fagaceae conservation efforts in Taiwan
Read more
The ginger seedlings are growing well, but soil fertility has been completely destroyed © Kuoh-Cheng Yang
Dendrology
By Yi-Shan Tsai
Aug 5, 2023
Lotus McElfish: Quercus tardifolia and Others
This self-taught botanical artist has specialized in Texas native plants.
Read more
Quercus tardifolia
Oak Artists
By Website Editor
Jun 20, 2023
Kellogg's Oak Names
Albert Kellogg proposed six names for oaks, though only once is currently accepted.
Read more
Dr. Albert Kellogg aged 72
Oak Nomenclature
By Roderick Cameron
Jun 20, 2023
Exploring and Safeguarding Taiwan’s Rich Fagaceae Communities
A work visit to Taiwan highlights the need to conserve vulnerable Fagaceae species.
Read more
Dendrology
By Joeri Strijk
Jun 20, 2023

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
IOS Holds Its Inaugural Virtual Event
An account of IOS Webinar #1
Read more
screenshot_valerie_pence_presentation_2.jpg
Webinar Reports
By Nikola Šušić
Oct 20, 2023
IOS Tour of Oregon, September 2023
An account of the Tour guided by Sean Hogan
Read more
Tour Participants on Fiddler Peak
Trip Reports
By Website Editor
Oct 19, 2023
The Oak Collection at Santa Barbara Botanic Garden
A collection specializing in native Californian oaks
Read more
Quercus pacifica
Gardens & Arboreta
By Christina Varnava
Oct 18, 2023
Oak Open Days in Wales: Penrice and Glanusk
First OODs since 2019 held in the UK
Read more
Discussing remedial pruning at Penrice © Sairus Patel
Oak Open Days
By Roderick Cameron
Aug 15, 2023
The World’s Northernmost Oak?
An oak grows north of the Arctic Circle in Norway
Read more
The oak tree in Skjomendalen © Gerhard Sørensen-Fuglem and Cecilia Piccirilli Bjerkeset
Dendrology
By Website Editor
Aug 14, 2023
Species Spotlight: Quercus boyntonii
A Critically Endangered dwarf oak 
Read more
A small but mature Alabama sandstone oak producing acorns © Patrick Thompson
Plant Focus
By Website Editor
Aug 11, 2023
Not Another Oak Calamity…
Symptoms linked to phytoplasma infection found in Quercus humboldtii in Colombia
Read more
Unusual symptoms linked to phytoplasma infection in Quercus humboldtiii, Colombia © Eric Boa
Dendrology
By Website Editor
Aug 6, 2023
The Royal Oaks of Penrice Castle, Wales
What species of oak were planted by Royals at Penrice?
Read more
Miss Emily Talbot helps plant an oak (number 1 or 2, Quercus ×rosacea aff. robur), 1904; image courtesy Thomas Methuen-Campbell
Dendrology
By Steve Potter
Aug 6, 2023
Conservation of Fagaceae Forests of Southeastern Taiwan: Update
Latest news on Fagaceae conservation efforts in Taiwan
Read more
The ginger seedlings are growing well, but soil fertility has been completely destroyed © Kuoh-Cheng Yang
Dendrology
By Yi-Shan Tsai
Aug 5, 2023
Lotus McElfish: Quercus tardifolia and Others
This self-taught botanical artist has specialized in Texas native plants.
Read more
Quercus tardifolia
Oak Artists
By Website Editor
Jun 20, 2023
Kellogg's Oak Names
Albert Kellogg proposed six names for oaks, though only once is currently accepted.
Read more
Dr. Albert Kellogg aged 72
Oak Nomenclature
By Roderick Cameron
Jun 20, 2023
Exploring and Safeguarding Taiwan’s Rich Fagaceae Communities
A work visit to Taiwan highlights the need to conserve vulnerable Fagaceae species.
Read more
Dendrology
By Joeri Strijk
Jun 20, 2023

Pages

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

Supporting Institutional Members

Denver BG Logo
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