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Species Spotlight: Quercus carduchorum K.Koch

Acorn of Quercus carduchorum

A rare species from the Zagros forests in Iran

Species Spotlight: Quercus peninsularis Trel.

Quercus peninsularis

A Red Oak (Section Lobatae) endemic to inland ranges of northern Baja California, Mexico

Importing Endangered Engelmann Oaks into Australia

Editor's Picks

Group photo at Mereweather Arboretum
Oak collections and much more in Canberra, New South Wales...
Website Editor | Aug 11, 2025
A controversial publication proposes to change the...
Roderick Cameron | Aug 05, 2025
Group photo with champion Quercus arkansana in Bokrijk Arboretum
A team of reporters share their take on the event.
Website Editor | Jun 22, 2025

Plant Focus

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.

rare oaks

Species Spotlight: Quercus carduchorum K.Koch

Acorn of Quercus carduchorum

A rare species from the Zagros forests in Iran

Species Spotlight: Quercus peninsularis Trel.

Quercus peninsularis

A Red Oak (Section Lobatae) endemic to inland ranges of northern Baja California, Mexico

Importing Endangered Engelmann Oaks into Australia

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

Supporting Institutional Members

Standard Institutional Members

Rice University