Editor's Picks
Dr. Michael Avishai, a leading oak expert, botanist, and...
Ori Fragman-Sapir
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Feb 08, 2019
The Huntington, in San Marino, CA, obtained a grant from...
Website Editor
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Feb 08, 2019
It may surprise you to learn that we are not the first Oak...
Shaun Haddock
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Dec 15, 2018
Plant Focus
Quercus douglasii is an endemic California oak tree, affectionately called “the blue oak” due to its distinctive blueish-green leaf color....
All Articles
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
The Pholoe oak forest is located in southwestern Greece, in a plateau area at an altitude of about 600 m. It is an ecosystem that is unique...
By Vaso Charitopoulou
Oct 26, 2016
The Benemérita Universidad Autónoma de Puebla has published the Flora del Estado de Puebla, México.
By Website Editor
Aug 24, 2016
If I wanted to make stronger, more meaningful images, I should pick something that I love and photograph it again and again: “Follow what...
By William Guion
Aug 1, 2016
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