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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...

Charles Snyers's blog

On your way to Aiken. . .

On your way to AIken in South Carolina this November, you might pass by Red Oak, NC. 

The City of Aiken has in cultivation what is believed to be the most comprehensive collection of oaks in the United States. The week-end of 2-3 November will be devoted to discovering this collection and more.

Interested in attending this oak enthusiasts meeting, click here.

Tree of the year 2013 in France

Quercus robur pictured by Michel Timacheff

Michel Timacheff, IOS Member and photographer, came across an old oak near Villers-sur-Lesse in southern Belgium.  Its circumference is over 6 meters at BH. 

Chêne de Hour, Quercus robur (photo. Michel Timacheff)

 

The same oak was already a landmark at the end of the 19th century.

Dan Hinkely will be speaking at the 2013 Annual Meeting of the Magnolia Society, next April 19th- 21st.

New IOS Web site launched

 

It is my pleasure to announce that we have just launched a new IOS Web site.  Our previous Web site was built on an open source content management system called Drupal.  We moved it to a more recent version of Drupal.  In the process, we standardized and simplified the Web site to make it easier to use and easier to upgrade in the future. 

 

American Plant Hardiness Map 2012

In January 2012, the USDA Agricultural Research Service released a new edition of the American Plant Hardiness Map.  The previous edition was released in 1990.  Two new zones 12 and 13 have been added to this 2012 edition.  The zones are based on 1976-2055 weather data, that is 30 years of data.  The 1990 edition was based on 13 years of data.  See the What's new section of the USDA ARS Web site for details here

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