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    Louisiana Live Oaks

    A new book by IOS member Bill Guion is an homage to Louisiana’s historic live oaks and an appeal for their recognition and protection as a cultural, historic, and ecological treasure for Louisiana

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    Cloning Old Oaks in Poland

    Scientists in Poland have successfully micropropagated 500- to 800-year-old oaks and two of the cloned seedlings were planted in April 2019

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Editor's Picks

The Morton Arboretum, in collaboration with Botanic Gardens...
Website Editor | Jul 17, 2019
Stelian Radu, a founding member of the IOS, accomplished an...
Website Editor | Jun 16, 2019
Scientists in Poland have successfully micropropagated 500...
Website Editor | May 30, 2019

Plant Focus

Quercus look is one of the least-known oaks of the arid mountains of the Middle East. It grows on Mount Hermon and in the Anti-Lebanon...

Latest Articles

The Morton Arboretum, in collaboration with Botanic Gardens Conservation International U.S., are conducting a global ex-situ collections survey of six priority tree genera: Acer, Magnolia, Malu
Originally described as a species, Quercus ×dysophylla is now considered to be of hybrid origin.
For over thirty years Bill Guion has pursued and photographed the live oaks of Louisiana.

Latest Blog Posts

Guy Sternberg shares his photographs of the California Pre- and Post-Conference Tours.
A volunteer seedling in Massey University campus in New Zealand turns out to be a rare Mexican oak.
An exchange of emails in April this year discussed the origin of the champion specimen of Quercus look in the US.
Diana Gardener has again forwarded some interesting news items related to oaks and their connection to the manufacture of wines and spirits.
In November 2018 I had a long layover in Bogotá and had enough time for a quick visit to Parque Natural Chicaque, about an hour’s drive from the airport.

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Centenary celebrations related to the First World War (1914-1918) will be taking place throughout the 2014-2018 period, but 2015 will likely see the most important celebration in Australia and New...
A Pleistocene Clone of Palmer's Oak Persisting in Southern California The distribution of Palmer's oak (Quercus palmeri Engelm.) includes numerous isolated populations that are presumably relicts...
For upwards of twenty years I have been planting oaks at the Arboretum de la Bergerette in southwest France, during which time at least 200 species of oak have already been trialed outdoors, and...
During this early autumn week of incomparable weather, twelve members of the IOS, and three others who were guests, enjoyed a truly memorable time in northern Greece.  There were 13 men and two women...
Quercus pubescens Willd. is a species with a wide native range, found across the European continent, from Portugal to Lebanon and from Russia into Southern Germany. This oak takes its name from the...
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