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Editor's Picks

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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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A review of the assemblage of the oaks known as the "vallonea oaks" or "aegilops oaks" from the Eastern Mediterranean and the Levant.
Given its rugged beauty and hardiness, Quercus rugosa is recommended for gardens, parks, and arboreta in most regions. As it grows...
The distribution of Palmer's oak (Quercus palmeri Engelm.) includes numerous isolated populations that are presumably relicts of a formerly...
In October 2017, I visited Palomar Mountain State Park, San Diego County, California to collect acorns of the interior live oak, Quercus...
Rainer Lippert has always been interested in old trees. At the age of 16 he started to visit the largest trees in his home district in...
For this Species Spotlight we train our follow spot on an oak that is quite a star of the quercine scene: Quercus hypoleucoides (stage name...
Found in the late 1980s by Guy Sternberg in Springfield, Illinois, this selection was noted early on for its rapid growth rate and strong...
Quercus acutissima Carruth. is a species whose natural distribution covers a vast territory in East and Southeast Asia, from central Nepal...
It sounds like something out of science fiction, but David Cranwell has managed to create a reality where an acorn planted in New Zealand...
Doug McCreary, long-time member of the IOS, died earlier this year.
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-...
Quercus crassifolia is tree ranging in height from 4 to 15 meters, and is usually easily recognized by its leaves: stiff and leathery,...

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