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Species Spotlight: Quercus castaneifolia C.A.Mey

By Website Editor | December 7, 2025
Champion Quercus castaneifolia in Iran
Chestnut-leaf oak in habitat and in cultivation

Species Spotlight: Quercus vulcanica Boiss. & Heldr. ex Kotschy

By Elif Deniz Ülker | October 23, 2025
Quercus vulcanica acorn and leaves
An oak endemic to Turkey

Hybrid Highlight: Quercus ×bimundorum E.J. Palmer, the ‘Oak of Two Worlds’

By Website Editor | August 4, 2025
Quercus ×bimundorum ‘Crimschmidt’ growing in the Prairie Arboretum, Freeman, South Dakota, USA © Dirk GiseburtQuercus ×bimundorum ‘Crimschmidt’ growing in the Prairie Arboretum, Freeman, South Dakota, USA © Dirk Giseburt
A naturally occurring hybrid between Quercus robur and Q. alba.

Species Spotlight: Quercus carduchorum K.Koch

By Website Editor | April 17, 2025
Acorn of Quercus carduchorum

A rare species from the Zagros forests in Iran

Species Spotlight: Quercus kotschyana O.Schwarz

By Jean Stephan | April 5, 2025
Quercus kotschyana fruit and leaves in Jaj cedars nature reserve
A rare oak endemic to Lebanon.

Species Spotlight: Quercus persica Jaub. & Spach

By Website Editor | February 10, 2025
Quercus persica acorns

Parisa Panahi and Mehdi Pourhashemi train the follow spot on a rare Iranian oak

Species Spotlight: Quercus magnosquamata Djav.-Khoie

By Website Editor | December 10, 2024
Quercus magnosquamata acorn

A  little-known species from the northern Zagros forests of Iran

Species Spotlight: Quercus dumosa Nutt.

By Joseph Ree | August 8, 2024
Quercus dumosa acorn

Animals, plants, and fungi depend on this humble tree, but its future—and theirs—is all but certain.

Pages

Editor's Picks

Yoko and John planting acorns
Yoko’s Oaks
"Japanese oaks" planted at Coventry Cathedral
Steve Potter | Dec 21, 2025
Group with Quercus macdougallii
Post-Conference Tour: Oaxaca
Six days exploring Oaxaca’s oak diversity, as reported by...
Wally Wilkins | Dec 10, 2025
One of the first planted circles on Hampton Common, London, in partnership with Orleans House Gallery 2025. © Studio Ackroyd & Harvey
Virtuous Circles: Oaks and the Art of Ackroyd & Harvey
Oaks planted in circles as a continuation of the artwork...
Steve Potter | Dec 10, 2025

Plant Focus

Champion Quercus castaneifolia in Iran
Species Spotlight: Quercus castaneifolia C.A.Mey
Chestnut-leaf oak in habitat and in cultivation
Read more

Plant Focus

Species Spotlight: Quercus castaneifolia C.A.Mey

By Website Editor | December 7, 2025
Champion Quercus castaneifolia in Iran
Chestnut-leaf oak in habitat and in cultivation

Species Spotlight: Quercus vulcanica Boiss. & Heldr. ex Kotschy

By Elif Deniz Ülker | October 23, 2025
Quercus vulcanica acorn and leaves
An oak endemic to Turkey

Hybrid Highlight: Quercus ×bimundorum E.J. Palmer, the ‘Oak of Two Worlds’

By Website Editor | August 4, 2025
Quercus ×bimundorum ‘Crimschmidt’ growing in the Prairie Arboretum, Freeman, South Dakota, USA © Dirk GiseburtQuercus ×bimundorum ‘Crimschmidt’ growing in the Prairie Arboretum, Freeman, South Dakota, USA © Dirk Giseburt
A naturally occurring hybrid between Quercus robur and Q. alba.

Species Spotlight: Quercus carduchorum K.Koch

By Website Editor | April 17, 2025
Acorn of Quercus carduchorum

A rare species from the Zagros forests in Iran

Species Spotlight: Quercus kotschyana O.Schwarz

By Jean Stephan | April 5, 2025
Quercus kotschyana fruit and leaves in Jaj cedars nature reserve
A rare oak endemic to Lebanon.

Species Spotlight: Quercus persica Jaub. & Spach

By Website Editor | February 10, 2025
Quercus persica acorns

Parisa Panahi and Mehdi Pourhashemi train the follow spot on a rare Iranian oak

Species Spotlight: Quercus magnosquamata Djav.-Khoie

By Website Editor | December 10, 2024
Quercus magnosquamata acorn

A  little-known species from the northern Zagros forests of Iran

Species Spotlight: Quercus dumosa Nutt.

By Joseph Ree | August 8, 2024
Quercus dumosa acorn

Animals, plants, and fungi depend on this humble tree, but its future—and theirs—is all but certain.

Pages

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

Supporting Institutional Members

Denver BG Logo
The Morton Arboretum logo
San Antonio Botanical Garden logo
 

Standard Institutional Members

Bartlett Tree Experts logo
Catalina Island Conservancy logo
Forrest Keeling Nursery logo
Houston Botanic Garden logo
 
Rice University
San Diego Botanic Garden logo
San Diego Zoo Wildlife Alliance logo
The Huntington
The John Fairey Garden