Caps and T-shirts for Sale!

By Website Editor | October 17, 2022

10th IOS Conference T-shirts

Order yours today!

Read more about Caps and T-shirts for Sale!

Thank You to the Conference Committee!

By Website Editor | October 16, 2022

2022 tOAKen

Shout out to the 12 IOS members who organized the Conference and Tours

Read more about Thank You to the Conference Committee!

2022 IOS Service Awards Presented at the 10th IOS Conference in Las Cruces

By Shaun Haddock | October 14, 2022

Shaun Haddock receives an award for Eike Jablonski

Service awards recognize contributions to genus Quercus and to the IOS

Read more about 2022 IOS Service Awards Presented at the 10th IOS Conference in Las Cruces

The 10th IOS Conference in Las Cruces, New Mexico

By Zarah Wyly | October 12, 2022

Group photo

The traditional triennial gathering took place in the shadows of the Organ Mountains.

Read more about The 10th IOS Conference in Las Cruces, New Mexico

Jeff Stevens (1958–2021)

By Roderick Cameron | October 17, 2021

Jeff Stevens

Jeff Stevens, 63, of Apison, Tennessee, USA passed away September 26, 2021.

Read more about Jeff Stevens (1958–2021)

Bill Hess (1934–2021)

By Roderick Cameron | October 16, 2021

Bill Hess - Courtesy of The Morton Arboretum

William "Bill" J. Hess, 87, of Crossville, Tennessee, USA passed away on June 11, 2021.

Read more about Bill Hess (1934–2021)

Remembering Piers Trehane

By Roderick Cameron | April 13, 2021

Piers Trehane

Last March marked the 10 years since the death of Piers Trehane. It seemed a good opportunity to remember him and his contribution to the IOS.

Read more about Remembering Piers Trehane

OC&R Committee Announces First Round of Grant Funding

By Tim Boland | February 19, 2021

The Oak Conservation and Research Fund has selected three projects to receive awards

Read more about OC&R Committee Announces First Round of Grant Funding

In Memoriam: Riet van Hoey Smith (1923–2020)

By Guy Sternberg | December 5, 2020

In early November Trompenburg Arboretum announced the sad news that Riet van Hoey Smith had died on October 24th, aged 97.

Read more about In Memoriam: Riet van Hoey Smith (1923–2020)

David Varel (1973–2020)

By Ryan Russell | October 15, 2020

Dave Varel

David "Dave" Varel of Albers, Illinois passed away September 6, 2020.

Read more about David Varel (1973–2020)

Pages

Editor's Picks

Michel Gandoger in an albumen silver print dated 18 March 1876, dedicated on the reverse to Roberto de Visiani - Image: PHAIDRA University of Padova Attribution-NonCommercial-ShareAlike 4.0 International

Gandoger the Memorious

While working on a list of synonyms of European White...

Roderick Cameron | Aug 24, 2026

Cover of Select Native Asian Oaks Gap Analysis

Conservation Gap Analysis of Select Native Asian Oaks

Report led by The Morton Arboretum will help prioritize oak...

Website Editor | Aug 06, 2026

A1's 2024 crop of acorns

Early Fruiting Quercus robur in Slovakia

Motivation I live in the village of Dolné Dubové...

Jozef Čapkovič | Jul 20, 2026

Plant Focus

Quercus afares, Kew, © James MacEwen

Species Spotlight: Quercus afares Pomel

The only oak species endemic to Africa is rare in cultivation. It shouldn't be.

Read more

Society News

Caps and T-shirts for Sale!

By Website Editor | October 17, 2022

10th IOS Conference T-shirts

Order yours today!

Read more about Caps and T-shirts for Sale!

Thank You to the Conference Committee!

By Website Editor | October 16, 2022

2022 tOAKen

Shout out to the 12 IOS members who organized the Conference and Tours

Read more about Thank You to the Conference Committee!

2022 IOS Service Awards Presented at the 10th IOS Conference in Las Cruces

By Shaun Haddock | October 14, 2022

Shaun Haddock receives an award for Eike Jablonski

Service awards recognize contributions to genus Quercus and to the IOS

Read more about 2022 IOS Service Awards Presented at the 10th IOS Conference in Las Cruces

The 10th IOS Conference in Las Cruces, New Mexico

By Zarah Wyly | October 12, 2022

Group photo

The traditional triennial gathering took place in the shadows of the Organ Mountains.

Read more about The 10th IOS Conference in Las Cruces, New Mexico

Jeff Stevens (1958–2021)

By Roderick Cameron | October 17, 2021

Jeff Stevens

Jeff Stevens, 63, of Apison, Tennessee, USA passed away September 26, 2021.

Read more about Jeff Stevens (1958–2021)

Bill Hess (1934–2021)

By Roderick Cameron | October 16, 2021

Bill Hess - Courtesy of The Morton Arboretum

William "Bill" J. Hess, 87, of Crossville, Tennessee, USA passed away on June 11, 2021.

Read more about Bill Hess (1934–2021)

Remembering Piers Trehane

By Roderick Cameron | April 13, 2021

Piers Trehane

Last March marked the 10 years since the death of Piers Trehane. It seemed a good opportunity to remember him and his contribution to the IOS.

Read more about Remembering Piers Trehane

OC&R Committee Announces First Round of Grant Funding

By Tim Boland | February 19, 2021

The Oak Conservation and Research Fund has selected three projects to receive awards

Read more about OC&R Committee Announces First Round of Grant Funding

In Memoriam: Riet van Hoey Smith (1923–2020)

By Guy Sternberg | December 5, 2020

In early November Trompenburg Arboretum announced the sad news that Riet van Hoey Smith had died on October 24th, aged 97.

Read more about In Memoriam: Riet van Hoey Smith (1923–2020)

David Varel (1973–2020)

By Ryan Russell | October 15, 2020

Dave Varel

David "Dave" Varel of Albers, Illinois passed away September 6, 2020.

Read more about David Varel (1973–2020)

Pages

The International Oak Society acknowledges the generous support of the following institutions:

Supporting Institutional Members

Standard Institutional Members

Catalina Island Conservancy

Oak Spring Foundation

Rice University

South Carolina Botanical Garden

The International Oak Society acknowledges the generous support of the following institutions:

Supporting Institutional Members

Standard Institutional Members

Catalina Island Conservancy

Oak Spring Foundation

Rice University

South Carolina Botanical Garden