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Editor's Picks

Karl Georg Theodor Kotschy was an Austrian botanist and...
Eike Jablonski | Jun 11, 2016
Quercus grisea - Greenlee County, AZ
This article is an account of the oak field trip organized...
Charles Snyers | Sep 22, 2017
North American oaks have a northern temperate origin and...
Website Editor | Oct 12, 2017

Plant Focus

Quercus acutissima subsp. kingii
Quercus acutissima Carruth. is a species whose natural distribution covers a vast territory in East and Southeast Asia, from central Nepal...

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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 intrducing 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-...
In July 2015 a group of IOS members visited Gredington in north Wales and Ness Botanic Garden near Liverpool, England.
At the Gala Banquet held in the Gingko Restaurant of The Morton Arboretum on Tuesday, October 20, the International Oak Society presented...

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