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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

New Zealand Oak Open Days 2020 (CANCELED)

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Event Date: 
Saturday, 25 April 2020 to Sunday, 26 April 2020

Due to the ongoing Covid-19 restrictions, we have been obliged to cancel this event. We hope to be able to hold it on a future date.

Legendary Hackfalls Arboretum and Eastwoodhill Arboretum, the National Arboretum of New Zealand, are the protagonists of the two-day event, organized jointly by the IOS and the New Zealand Farm Forestry Association. Both these arboreta contain world-class oak collections, featuring Mexican oaks, and a day will be spent in each. Our focus on oaks will of course not blind us to the many other treasures these arboreta have to offer. Accommodation will be in the nearby town of Gisborne, so we'll spend most of the time looking at trees rather than traveling. While it is expected that most of the participants will be local IOS members and other tree enthusiasts from New Zealand, this is a rare and ideal opportunity for international visitors to make two days in outstanding oak collections part of a visit to New Zealand, a premier travel destination.

For more details, visit the New Zealand Farm Forestry Association website: https://www.nzffa.org.nz/events/ (scroll down to find Oak Open Days, Gisborne 25 - 27 April 2020)

 

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Quercus insignis at Hackfalls Arboretum, planted 1989

If you have questions or would like to register your interest, please write to tours@internationaloaksociety.org

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