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The Benemérita Universidad Autónoma de Puebla has published the Flora del Estado de Puebla, México.
If I wanted to make stronger, more meaningful images, I should pick something that I love and photograph it again and again: “Follow what...
Found in the late 1980s by Guy Sternberg in Springfield, Illinois, this selection was noted early on for its rapid growth rate and strong...
This cultivar was selected by Raimond Cinovskis, from the Botanical Garden of the Academy of Sciences, Salapils, Latvia and was introduced...
Named in honor of one of America’s first botanists, John Bartram, Quercus ×heterophylla is known by many as Bartram’s oak.
A reliable asexual propagation method for oaks is crucial for introducing superior hybrid oak selections into the nursery trade as named...
Karl Georg Theodor Kotschy was an Austrian botanist and eminent plant explorer. He died 150 years ago in Vienna on June 11, 1866.
The first IOS Oak Open Day event south of the Equator took place April 22-24, 2016, in Argentina.
Quercus ilicifolia is a little oak with a big name: bear oak. 
A review of the assemblage of the oaks known as the "vallonea oaks" or "aegilops oaks" from the Eastern Mediterranean and the Levant.
Following the 2015 IOS Conference, the Plant Collecting Collaborative traveled to the Southeastern United States on a seed collection...
The subject of the latest addition to our series on Historic Oaks may seem an odd choice, for all that remains of the tree is an ivy-...

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Editor's Picks

Michel Gandoger
While working on a list of synonyms of European White...
Roderick Cameron | Aug 24, 2026
Cover of Select Native Asian Oaks Gap Analysis
Report led by The Morton Arboretum will help prioritize oak...
Website Editor | Aug 06, 2026
A1's 2024 crop of acorns
Motivation I live in the village of Dolné Dubové...
Jozef Čapkovič | Jul 20, 2026

Plant Focus

Quercus afares, Kew, © James MacEwen
The only oak species endemic to Africa is rare in cultivation. It shouldn't be.

All Articles

The Benemérita Universidad Autónoma de Puebla has published the Flora del Estado de Puebla, México.
If I wanted to make stronger, more meaningful images, I should pick something that I love and photograph it again and again: “Follow what...
Found in the late 1980s by Guy Sternberg in Springfield, Illinois, this selection was noted early on for its rapid growth rate and strong...
This cultivar was selected by Raimond Cinovskis, from the Botanical Garden of the Academy of Sciences, Salapils, Latvia and was introduced...
Named in honor of one of America’s first botanists, John Bartram, Quercus ×heterophylla is known by many as Bartram’s oak.
A reliable asexual propagation method for oaks is crucial for introducing superior hybrid oak selections into the nursery trade as named...
Karl Georg Theodor Kotschy was an Austrian botanist and eminent plant explorer. He died 150 years ago in Vienna on June 11, 1866.
The first IOS Oak Open Day event south of the Equator took place April 22-24, 2016, in Argentina.
Quercus ilicifolia is a little oak with a big name: bear oak. 
A review of the assemblage of the oaks known as the "vallonea oaks" or "aegilops oaks" from the Eastern Mediterranean and the Levant.
Following the 2015 IOS Conference, the Plant Collecting Collaborative traveled to the Southeastern United States on a seed collection...
The subject of the latest addition to our series on Historic Oaks may seem an odd choice, for all that remains of the tree is an ivy-...

Pages

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

Supporting Institutional Members

The John Fairey Garden

Standard Institutional Members

Bartlett Tree Experts logo
Catalina Island Conservancy logo
Forrest Keeling Nursery logo
Houston Botanic Garden logo
KOAGI logo
Oak Spring Foundation
Rice University
San Diego Botanic Garden logo
San Diego Zoo Wildlife Alliance logo
South Carolina Botanical Garden
The Huntington