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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

UK Oak Open Days 2020 (CANCELED)

Event Date: 
Saturday, 11 July 2020 to Sunday, 12 July 2020

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

The Oak Open Days in 2020 will be held in Wales on Saturday 11th and Sunday 12th July. This is a week before the UK school holidays begin, which should ensure that accommodation is available and the roads are not overfull.

The event will commence at the estate of Glanusk, near Crickhowell in central Wales. The present owner, Harry Legge-Bourke, continues to enlarge the oak collection of his late father, Bill Legge-Bourke, whom some of you will remember from early IOS tours. The estate’s beautiful setting on the River Usk would be well worth a visit even without the oaks!

Glanusk Estate
The gardens at Glanusk © Glanusk Estate

We will find our own accommodation in Crickhowell for the night (a list will be sent to those interested), and then we will convoy to Wales’ south coast to visit Thomas Methuen-Campbell at Penrice Castle, a property also with an incomparable position in a private valley running down to the sea, and where exotic oaks are mingled both in garden and forest settings.

Penrice
Penrice Castle

If there is enough interest, the tour could be extended on Monday July 13th to include Dyffryn Gardens (a Quercus ×crenata (syn. Q. ×hispanica) 'Lucombeana' measured ten years ago as having a circumference of 6.1 metres, and a champion Q. trojana) and some of the exotic non-oaks planted in the parks of the city of Cardiff.

Dyffryn House
Dyffryn House

If you are interested in participating in these Oak Open Days, please contact tours@internationaloaksociety.org

Event Category: