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UK Oak Open Days 2025: Caerhays and Tregrehan

By Stephen Wood | October 27, 2025
Group photo at Tregrehan
Visits to two gardens with collections of oaks and other Fagaceae

Oaks in Oz: Australian Oak Open Days, May 8–13, 2025

By Website Editor | August 11, 2025
Group photo at Mereweather Arboretum
Oak collections and much more in Canberra, New South Wales, and Victoria.

Belgian Oak Open Days: May 29–June 1, 2025

By Website Editor | June 22, 2025
Group photo with champion Quercus arkansana in Bokrijk Arboretum
A team of reporters share their take on the event.

New Zealand Oak Open Days: May 15–18, 2025

By Website Editor | June 21, 2025
Group photo at Guthrie-Smith Arboretum
Four days exploring oaks on the east coast of North Island

Texas Oak Open Days - October 12–16, 2023

By Roderick Cameron | October 21, 2023
Group photos Texas OODs

Five days of oaking in the Lone Star State.

Blowing Out 25 Candles at Starhill

By Charles Snyers ... | October 9, 2017
20170903001-001.jpg

The International Oak Society celebrates its 25th anniversary at Starhill Forest Arboretum.

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

Oak Open Days

UK Oak Open Days 2025: Caerhays and Tregrehan

By Stephen Wood | October 27, 2025
Group photo at Tregrehan
Visits to two gardens with collections of oaks and other Fagaceae

Oaks in Oz: Australian Oak Open Days, May 8–13, 2025

By Website Editor | August 11, 2025
Group photo at Mereweather Arboretum
Oak collections and much more in Canberra, New South Wales, and Victoria.

Belgian Oak Open Days: May 29–June 1, 2025

By Website Editor | June 22, 2025
Group photo with champion Quercus arkansana in Bokrijk Arboretum
A team of reporters share their take on the event.

New Zealand Oak Open Days: May 15–18, 2025

By Website Editor | June 21, 2025
Group photo at Guthrie-Smith Arboretum
Four days exploring oaks on the east coast of North Island

Texas Oak Open Days - October 12–16, 2023

By Roderick Cameron | October 21, 2023
Group photos Texas OODs

Five days of oaking in the Lone Star State.

Blowing Out 25 Candles at Starhill

By Charles Snyers ... | October 9, 2017
20170903001-001.jpg

The International Oak Society celebrates its 25th anniversary at Starhill Forest Arboretum.

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