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UK Oak Open Days 2026

The 2026 edition of the UK OODs will feature visits to two oak collections in southeastern England.

IOS Webinar #12: Flower Development and Diversity in Quercus, and Improved Methods for Rooting Cuttings of Evergreen Oaks

The IOS is pleased to announce our next virtual event, again co-hosted with the Global Conservation Consortium for Oak (GCCO)

Tour of Türkiye

7-day journey through some of Türkiye’s diverse ecoregions

Tour of Southeast USA

The Tour will focus on Georgia and Alabama, with incursions into South Carolina and northern Florida.

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)
A new documentary by Maricela Rodríguez Acosta
Website Editor | Feb 17, 2026
Quercus miyagii acorn and dried leaves
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
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
Antonio Lambe shares his views on this threatened oak native to Iberia and North Africa

Upcoming Events

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UK Oak Open Days 2026

The 2026 edition of the UK OODs will feature visits to two oak collections in southeastern England.

IOS Webinar #12: Flower Development and Diversity in Quercus, and Improved Methods for Rooting Cuttings of Evergreen Oaks

The IOS is pleased to announce our next virtual event, again co-hosted with the Global Conservation Consortium for Oak (GCCO)

Tour of Türkiye

7-day journey through some of Türkiye’s diverse ecoregions

Tour of Southeast USA

The Tour will focus on Georgia and Alabama, with incursions into South Carolina and northern Florida.

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