Oak Open Days

UK Oak Open Days 2026

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

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UK Oak Open Days 2025

The 2025 edition of the UK OODs will focus on the Fagaceae family and include visits to two collections in Cornwall.

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Belgian Oak Open Days 2025

It's high time we took another look at the Belgian oak collections. This time the event will take place over the Ascension weekend, 29 May–1 June 2025, four days.

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New Zealand Oak Open Days 2025

This four-day event will feature visits to legendary Hackfalls Arboretum and Eastwoodhill Arboretum, the National Arboretum of New Zealand, among others.

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Australian Oak Open Days 2025

This multiday event will include visits to oak collections in Victoria, New South Wales, and Canberra.

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French Oak Open Days 2024

Four phenomenal oak collections in as many days in a jaunt round southwestern France

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UK Oak Open Days 2024

The 2024 edition of the UK OODs will combine outstanding oak collections and veteran oak trees.

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Oak Open Days in Texas

The event will feature visits to important oak collections in three gardens in Texas, as well as other attractions in Houston and a tour of southwe

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Oak Study Day at Chevithorne Barton

This event has been organized in conjunction with the International Dendrology Society and is currently SOLD OUT.

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UK Oak Open Days 2023

Oak Open Days will be held in Wales on Saturday 1st and Sunday 2nd July, 2023.

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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)

"Oaks: the Backbone of Mexico" – New Documentary Film

A new documentary by Maricela Rodríguez Acosta

Website Editor | Feb 17, 2026

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