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An account of 50 of the 64 protected oaks in Serbia
Oak Origins: From Acorns to Species and the Tree of Life will be published in December
This new entry in our series on Oak Poetry was proposed by Hugo Ribeiro, IOS member from Portugal.
Three-day event included visits to two parks in Berkshire and two gardens in West Sussex
Two proposals to conserve names of oaks were ratified at the International Botanical Congress held in Madrid in July
Several abstracts included research involving Quercus.
This five-day event included visits to four oak collections in southwestern France and one across the border in Spain. 
Animals, plants, and fungi depend on this humble tree, but its future—and theirs—is all but certain.
Together with her husband Mark, Jolly helped establish and maintain the Oak Conservation and Research Fund, created by the IOS in 2019.
Oaks found close to the 70th parallel north
A new entry in our series on Oak Poetry, this poem by Antonio Machado describes the holm oaks of
A Red Oak (Section Lobatae) endemic to inland ranges of northern Baja California, Mexico

Pages

Editor's Picks

Group photo at Harvard Herbarium
The Harvard University Herbaria hosted a novel Oak Taxonomy...
Jeannine Cavender-Bares | Apr 21, 2026
Morgan and friends in Argentina
Visits to three collections of Quercus in Buenos Aires...
Morgan Santini | Apr 05, 2026
Michel Duhart and Paco Garin at Jardín Botánico Wilson, Costa Rica
On April 1st, the very day he turned 103, a great friend...
Francisco Garin Garcia | Apr 05, 2026

Plant Focus

Quercus orocantabrica
Roderick Cameron and Carlos Vila-Viçosa give an account of this intriguing species from northwestern Iberia with a complex taxonomic and...

All Articles

An account of 50 of the 64 protected oaks in Serbia
Oak Origins: From Acorns to Species and the Tree of Life will be published in December
This new entry in our series on Oak Poetry was proposed by Hugo Ribeiro, IOS member from Portugal.
Three-day event included visits to two parks in Berkshire and two gardens in West Sussex
Two proposals to conserve names of oaks were ratified at the International Botanical Congress held in Madrid in July
Several abstracts included research involving Quercus.
This five-day event included visits to four oak collections in southwestern France and one across the border in Spain. 
Animals, plants, and fungi depend on this humble tree, but its future—and theirs—is all but certain.
Together with her husband Mark, Jolly helped establish and maintain the Oak Conservation and Research Fund, created by the IOS in 2019.
Oaks found close to the 70th parallel north
A new entry in our series on Oak Poetry, this poem by Antonio Machado describes the holm oaks of
A Red Oak (Section Lobatae) endemic to inland ranges of northern Baja California, Mexico

Pages

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

Supporting Institutional Members

 

Standard Institutional Members

Rice University
San Diego Botanic Garden logo
San Diego Zoo Wildlife Alliance logo
South Carolina Botanical Garden

 

The Huntington
The John Fairey Garden