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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

Oak Open Days in the Czech Republic

Event Date: 
Friday, 21 July 2017 to Sunday, 23 July 2017

The IOS has its 25th anniversary in 2017, and a superb way to celebrate it will be to get yourself to the Czech Republic in July where, during a three-day Oak Open Day event based at his arboretum near Poděbrady, enthusiastic and dynamic IOS member Dušan Plaček is sponsoring a "Birthday Banquet" for participants at Poděbrady Castle (you can read more about Dušan and his oak collection in Beatrice Chassé's article about Plaček Quercetum in International Oaks No.26). The OODs will run from July 21 to 23, and in addition to Dušan’s arboretum will include visits to Prûhonice Park near Prague, with mature plantings from the early 20th century, and an interesting stand of wild Quercus pubescens.

Placek Quercetum
Aerial view of Plaček​ Quercetum near Poděbrady​, Czech Republic

For those coming from further afield (and we hope that many members will take this opportunity to visit this beautiful and historic part of Europe) Dušan and his team are willing to advise and assist with additional visits in the area to add to the OODs. Dušan has also generously offered to sponsor the transport during the event. For information regarding accommodation and the remaining meals and to register your interest in this event please write to tours@internationaloaksociety.org, mentioning also if you will be seeking advice on additional visits.

Podebrady Castle
Poděbrady​ Castle

 

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