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Map of the comarcas of Catalonia indicating the presence of Quercus suber hybrids
Àlan Olmedo has been documenting cork oak hybrids in northeastern Spain

Yoko’s Oaks

Yoko and John planting acorns
"Japanese oaks" planted at Coventry Cathedral

Virtuous Circles: Oaks and the Art of Ackroyd & Harvey

One of the first planted circles on Hampton Common, London, in partnership  with Orleans House Gallery 2025.  © Studio Ackroyd & Harvey
Oaks planted in circles as a continuation of the artwork initiated by Joseph Beuys in the 1980s.

Beth Moon's "Oak: from Seed to Ancient Tree"

Book cover
If you love oaks, you need this book.

Species Spotlight: Quercus castaneifolia C.A.Mey

Champion Quercus castaneifolia in Iran
Chestnut-leaf oak in habitat and in cultivation
Researchers and practitioners from Guatemala, Costa Rica, Colombia, Mexico, and the United States shared latest findings on Mesoamerican oaks in Oaxaca, Mexico.

Pages

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)
A new documentary by Maricela Rodríguez Acosta
Website Editor | Feb 17, 2026
Quercus miyagii acorn and dried leaves
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
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
Antonio Lambe shares his views on this threatened oak native to Iberia and North Africa

Quercus

Map of the comarcas of Catalonia indicating the presence of Quercus suber hybrids
Àlan Olmedo has been documenting cork oak hybrids in northeastern Spain

Yoko’s Oaks

Yoko and John planting acorns
"Japanese oaks" planted at Coventry Cathedral

Virtuous Circles: Oaks and the Art of Ackroyd & Harvey

One of the first planted circles on Hampton Common, London, in partnership  with Orleans House Gallery 2025.  © Studio Ackroyd & Harvey
Oaks planted in circles as a continuation of the artwork initiated by Joseph Beuys in the 1980s.

Beth Moon's "Oak: from Seed to Ancient Tree"

Book cover
If you love oaks, you need this book.

Species Spotlight: Quercus castaneifolia C.A.Mey

Champion Quercus castaneifolia in Iran
Chestnut-leaf oak in habitat and in cultivation
Researchers and practitioners from Guatemala, Costa Rica, Colombia, Mexico, and the United States shared latest findings on Mesoamerican oaks in Oaxaca, 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