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Editor's Picks

Ancient Oaks and Biodiveresity page 1
Aljos Farjon FLS reports on the biodiversity of High Park,...
Website Editor | Jun 28, 2024
David Oliver and the northernmost oak (to date)
Oaks found close to the 70th parallel north
DW Oliver | Jun 28, 2024
Action Oak Report 2023-24
Action Oak is a unique collaboration of charities,...
Annabel Narayanan | Jun 26, 2024

Plant Focus

Quercus peninsularis
A Red Oak (Section Lobatae) endemic to inland ranges of northern Baja California, Mexico

Past Events


UK Oak Open Days 2024

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


French Oak Open Days 2024

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


IOS Webinar #4: Quercus marlipoensis Conservation Project and the Oaks of Chevithorne Barton

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


Action Oak’s Partner Event 2024

Members of the IOS are warmly invited to join Action Oak's Annual Partner Event at Cathays Park in Cardiff, UK.


IOS Webinar #3: GCCO Metacollections and Gap Analysis; the Oaks of San Antonio Botanical Garden

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


IOS Webinar #2: Hipp on Hybrids and the Oaks at BUAP

The IOS is pleased to announce our second virtual event, once more co-hosted with the Global Conservation Consortium for Oak (GCCO).


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 southwest Hill Country. 


IOS Tour of Oregon

This 7-day Tour will be led by renowned plantsman Sean Hogan of Cistus Nursery. The first part of the trip will be based in Portland with visits to gardens and day trips to nearby locations.


IOS Webinar #1: Cryopreservation at CREW and Oaks at Grigadale

The IOS and Global Conservation Consortium for Oak (GCCO) will co-host our first virtual event.


Oak Study Day at Chevithorne Barton

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


UK Oak Open Days 2023

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


4th Iberian & International Conference on Acorns for Human Consumption

IOS member Joan Monserrat has shared details of this event: 


8th California Oak Symposium

Sustaining Oak Woodlands Under Current and Future Conditions


Post-Conference Tour 2022: Arizona

Highlights of the Tour scheduled to take place immediately after the 10th International Oak Society Conference


10th International Oak Society Conference 2022

Oaks in a Wild Landscape: Conserving Species and Restoring Balance
Las Cruces, New Mexico, USA


Pre-Conference Tour 2022: New Mexico

Highlights of one of two Tours scheduled to take place immediately before the 10th International Oak Society Conference


Pre-Conference Tour 2022: Western Texas

Highlights of one of two Tours due to take place immediately before the 10th International Oak Society Conference.


Eternal Forest Conversation: The Mighty Oak

This event brings together artists, scientists, researchers and lovers of genus Quercus, and of course the Mighty Oak itself.


Virtual Panel Discussion: The Mighty Oak

An online event hosted by Sarah P. Duke Gardens of Duke University


Conserving Exceptional Plants: Cryobiotechnology and the Model of Oaks

Virtual Global Symposium and Workshop


IDS South West France & Northern Spain Tour

An IDS Tour will feature four iconic oak collections


ArbNet 10th Anniversary Virtual Conference

Registration is now open for the ArbNet 10th Anniversary Virtual Conference: Partnering to Protect and Plant Trees. 


Oak Diversity in Arkansas and Biogeography with Suresh Subedi

Dr. Suresh Subedi, Assistant Professor of Biology at Arkansas Tech University in Russellville, discusses the diversity of oak species found in Arkansas, and their biogeography


Starhill Forest Arboretum Tours

Starhill Forest Arboretum will be hosting tours during September and October 2020.


New York Nut Growers Association 2020 Fall Meeting

Get up to date with nut growing in New York! 


UK Oak Open Days 2020 (CANCELED)

(This event has been postponed due to the ongoing COVID-19 restrictions) 


New Zealand Oak Open Days 2020 (CANCELED)

(This event has been canceled due to the ongoing COVID-19 restrictions) A two-day event featuring visits to Hackfalls Arboretum and Eastwoodhill Arboretum 


2019 Burr Oak Canyon Tree Symposium

Growing Better Trees Across the Great Plains


UK Oak Open Days 2019

Yorkshire Arboretum, Thorp Perrow, and Gredington Park

Mark Frith: a Legacy of Ancient Oaks

An exhibition at Royal Botanic Gardens, Kew (UK) that will be of interest to IOS members: Mark Frith's breath-taking portraits highlight the architectural beauty of tree trunks, bark and branches in winter. This series of 20 highly intricate, large scale graphite drawings by Mark Frith depicts Britain’s most characterful veteran oaks, many of which are more than 1,000 years old. 


Post-Conference Tours

Two sequential Post-Conference Tours to the San Francisco Bay Area and the Central Coast region are being offered to allow for a range of schedules and budgets. Join us for an exploration of urban and wild oak landscapes along California's scenic coast.


9th International Oak Society Conference 2018

The UC Davis Arboretum and Public Garden will host the next International Oak Society Conference on the University of California, Davis campus from October 21 to 24, 2018. Registration closed on September 15.


Pre-Conference Day Trips

Three options are available for Pre-Conference Day Trips on Sunday, October 21. Join us for a hike in the Berryessa Snow Mountain National Monument, a study tour of Pepperwood Preserve, or a wine tasting tour in the Napa Valley. 


Pre-Conference Tours

Two sequential Pre-Conference Tours to the Sierra Nevada and the Cascade-Siskiyou Mountain region are being offered to allow for a range of schedules and budgets. Join us as we explore the magnificent scenery and oak diversity in the mountains of Northern California.

Fagaceae and Nothofagaceae Genetics Symposium

The Morton Arboretum is organizing a meeting with ChenShan Botanical Garden in Shanghai on Fagaceae and Northofagaceae genetics. 


Oak Open Day at Starhill Arboretum

The stateside celebration of the 25th anniversary of the IOS will take place on September 2 at Starhill Forest Arboretum in Menard County, Illinois.

Tour of New Mexico and Arizona

Michael Meléndrez, long-time member of the IOS, will lead a ten-day filed trip in New Mexico from August 20 to 30, 2017.


Oak Open Days in the Czech Republic

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 Oak Open Days based at his arboretum near Poděbrady, enthusiastic and dynamic IOS member Dušan Plaček is sponsoring a "Birthday Banquet" for participants at Poděbrady Castle.

Standing the Test of Time: Kentucky's White Oak Basket Tradition

The exhibition Standing the Test of Time: Kentucky's White Oak Basket Tradition opens September 16, 2016 at the Kentucky Museum on the campus of Western Kentucky University in Bowling Green, Kentucky, USA. It runs through January 31, 2017.


IOS Tour of Southern New Mexico

Staunch IOS member Mike Meléndrez is willing to share his encyclopaedic knowledge of the oaks of the U.S. Southwest with a double bill of tours, in 2016 and 2017. The first Tour will take place September 24-29, 2016. 

The Oak Year

The Oak Year, an artwork by Scottish artist Anne Gilchrist, will be showing for 2 days (27th and 28th August 2016) at Edinburgh Palette, 151 London Road, Edinburgh www.edinburghpalette.co.uk. It comprises 24 painted panels 5 ft × 4 ft and depicts portraits of many hundreds of oak leaves from real specimens from one oak wood on the shore of Loch Tay, Perthshire. It shows a whole year's worth of leaves, and the close observational depiction shows variety of shape, size, predation, autumn colors, first leaves, and winter fallen leaves.


Oak Open Days at Atherstone and Thenford House, UK

We will visit David Gooder's young oak collection at Atherstone near Coventry on July 17, 2016, and Lord Heseltine's Thenford House in Northamptonshire on July 18.


Oak Open Days in Argentina

A two-day Oak Open Day (OOD) is planned for April 22-23, 2016 to visit Argentina’s two most notable oak arboreta.


Post-Conference Tour

Highlights of the 3-day Tour due to take place immediately following the 8th International Oak Society Conference in October 2015.


8th International Oak Society Conference 2015

The Morton Arboretum in Lisle, Illinois will host the next International Oak Society Conference October 18-21, 2015.
Registration for the 8th IOS Conference is now open


Pre-Conference Tour

Highlights of the tour due to take place immediately before the 8th International Oak Society Conference in October 2015.


Oak Open Day in Gredington

There will be a two-day Oak Open Day event in the UK in July 2015.

7th California Oak Symposium: Managing Oak Woodlands in a Dynamic World

Beginning in 1979, there have been a series of symposia held every 5 to 7 years addressing the state of our knowledge about science, policy and management factors affecting California’s oak resource. This upcoming program represents the 7th symposium in the series.


IOS Italian Tour 20 – 22 October 2014

A tour of southern Italy led by Belgian nurserymen Christof van Hulle and Dirk Benoit.


Trompenburg Tuinen & Arboretum

There will be a two-day event at Trompenburg Arboretum in The Netherlands on August 28-29, 2014.


Oak Open Days in Congrove and Westonbirt

The first European event of 2014 will take place in the UK, on July 6 and 7.


Oak Open Days in Starkville - West Point area, Mississippi

The International Oak Society, Mossy Oak Nativ Nurseries, and Mississippi State University cordially invite you to Oak Open Days, June 28-29, 2014 in the beautiful state of Mississippi.

Aiken Oak and Horticultural Tour

The City of Aiken has in cultivation what is believed to be the most comprehensive collection of oaks in the United States.  The week-end will be devoted to discovering this collection and more.

Oak Open Day, Pavia Nurseries, Belgium

A workshop on clonal oak propagation by grafting and visit of Dirk Benoit's Pavia Nurseries


Oak Open Day, Sir Harold Hillier Gardens, Ampfield, Hampshire, UK.

On Monday 29th July, 2013, there will be an Oak Open Day, open also to non IOS members, at the Sir Harold Hillier Gardens, a splendid 72-hectare collection not only of oaks but of many other rare trees, including several oak-related Lithocarpus.