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Dr. Michael Avishai, a leading oak expert, botanist, and...
Ori Fragman-Sapir | Feb 08, 2019
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The Huntington, in San Marino, CA, obtained a grant from...
Website Editor | Feb 08, 2019
It may surprise you to learn that we are not the first Oak...
Shaun Haddock | Dec 15, 2018

Plant Focus

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Quercus douglasii is an endemic California oak tree, affectionately called “the blue oak” due to its distinctive blueish-green leaf color....

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Quercus ithaburensis Decne. is a deciduous oak species native to the East Mediterranean basin. 
A naturally occurring hybrid, widely adopted by the nursery trade in the form of cultivars, labors under a misnomer: there is precious...
We are currently requesting accessions data, including provenance information, from all gardens that maintain oak species. 
The Hackfalls Arboretum Catalogue documents an outstanding achievement. New Zealand farmer, dendrologist, and IOS member Bob Berry has...
In the center of Oley Valley in Pennsylvania stands a majestic old chinkapin oak (Quercus muehlenburgii) known to many residents of the...
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...
Ever since the genus Quercus grabbed my attention, I have been amazed by the ability of oaks to hybridize easily (sometimes too easily),...
Copenhagen Hills Preserve is an ecological gem.  With its unique calcium-rich soils, it hosts a plethora of plant communities, ranging from...
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...
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...
The Benemérita Universidad Autónoma de Puebla has published the Flora del Estado de Puebla, México.
If I wanted to make stronger, more meaningful images, I should pick something that I love and photograph it again and again: “Follow what...

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