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Editor's Picks

The oak tree in Skjomendalen © Gerhard Sørensen-Fuglem and Cecilia Piccirilli Bjerkeset
An oak grows north of the Arctic Circle in Norway
Website Editor | Aug 14, 2023
Unusual symptoms linked to phytoplasma infection in Quercus humboldtiii, Colombia © Eric Boa
Symptoms linked to phytoplasma infection found in Quercus...
Website Editor | Aug 06, 2023
Different names are being used for one species.
Website Editor | Jun 20, 2023

Plant Focus

A small but mature Alabama sandstone oak producing acorns © Patrick Thompson
A Critically Endangered dwarf oak 


Lotus McElfish: Quercus tardifolia and Others

Quercus tardifolia

This self-taught botanical artist has specialized in Texas native plants.

A work visit to Taiwan highlights the need to conserve vulnerable Fagaceae species.

Maricela Rodríguez, GCCO Mexico and Central America Coordinator in Antigua, Guatemala

Currently the GCCO Coordinator for Mexico and Latin America, Maricela leads a group of professionals and amateurs interested in oaks and their conservation.

Jim Conrad's Oak Notes


The IOS recently received an inquiry from Jim Conrad about a strange phenomenon he observed on a twig of a Quercus ×dysophylla in the Eastern Sierra Madre in Mexico, where what appeared to be multiple styles emerged from a bud. It turns out they may be fungal reproductive bodies.


Five IOS members were invited to participate in an International Conservation Symposium in Taiwan.

Michael Eason hiking in Anza-Borrego Desert State Park to observe Washingtonia filifera in situ

Currently at San Antonio Botanic Garden, Michael's work has focused on conservation

Richard Geraint Evans: GPS Trees


An exhibition that beautifully depicts and locates oaks

Conserving Californian Oaks

The team at SDZWA

Christy Powell of the San Diego Zoo Wildlife Alliance works on the conservation of several threatened oaks

Importing Endangered Engelmann Oaks into Australia