Editor's Picks
The Huntington, in San Marino, CA, obtained a grant from...
Website Editor
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Feb 08, 2019
This blog entry focuses on the Engelmann oak grove at Los...
Charles Snyers
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Dec 15, 2018
This blog post focuses on the day and a half we spent in...
Charles Snyers
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Dec 02, 2018
Plant Focus
Quercus douglasii is an endemic California oak tree, affectionately called “the blue oak”.
All Articles
Quercus argentata is an evergreen tropical oak native to the islands of Borneo (absent in Brunei), Sumatra, and Western Java, as well as to...
By Joeri Strijk
Aug 16, 2017
The subject of the latest addition to our Oak Artist series is Harriet Blum, whose work straddles the media of photography and painting:...
By Roderick Cameron
Jul 16, 2017
Earl Cully, 90, of Jacksonville, Illinois passed away on Wednesday, May 31, 2017 at his home. Earl was a long-time member of the...
By Website Editor
Jun 15, 2017
Quercus ithaburensis Decne. is a deciduous oak species native to the East Mediterranean basin.
By Jean Stephan
Jun 5, 2017
A naturally occurring hybrid, widely adopted by the nursery trade in the form of cultivars, labors under a misnomer: there is precious...
By Roderick Cameron
Mar 30, 2017
We are currently requesting accessions data, including provenance information, from all gardens that maintain oak species.
By Emily Beckman
Feb 22, 2017
The Hackfalls Arboretum Catalogue documents an outstanding achievement. New Zealand farmer, dendrologist, and IOS member Bob Berry has...
By Roderick Cameron
Feb 18, 2017
In the center of Oley Valley in Pennsylvania stands a majestic old chinkapin oak (Quercus muehlenburgii) known to many residents of the...
By Plummer Dunkle Jr.
Feb 18, 2017
In January 2011, I made a quick visit to several natural areas in Palm Beach County, Florida while on a business trip and had my first...
By Dirk Giseburt
Feb 17, 2017
Ever since the genus Quercus grabbed my attention, I have been amazed by the ability of oaks to hybridize easily (sometimes too easily),...
By Jeroen Braakman
Feb 17, 2017
Copenhagen Hills Preserve is an ecological gem. With its unique calcium-rich soils, it hosts a plethora of plant communities, ranging from...
By Rebecca Delling...
Feb 17, 2017
The New Mexico Oak Open Days were a six-day whirlwind tour of the state covering more than 1,400 miles. Led by IOS founding member Michael...
By Ryan Russell
Dec 5, 2016
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