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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....

Blogs

An oak which breaks the rules... Do oaks have rules? Well, I think so: the rule of survival of the fittest implies that all unnecessary branch structure is unaffordably costly in resources – the...
Posted Fri, 2018-02-16 19:46 in Shaun Haddock's blog
It was a mast year in 2017 here in southwest France, spreading acorns so thickly under some trees they formed a solid carpet. So Quercus pubescens is evidently not in danger for now, but what of...
Posted Fri, 2018-02-16 18:28 in Shaun Haddock's blog
Many readers will have seen the reference on the IOS website to the publication online of the 8th edition of W.J. Bean’s Trees and Shrubs Hardy in the British Isles under the auspices of the...
Posted Fri, 2018-02-16 17:06 in Shaun Haddock's blog
A young and vigorously growing Quercus ‘Maya’ that we planted in 2007 showed a minor crack at the base of the trunk after the winter of 2011-2012...
Posted Thu, 2018-02-15 17:45 in Gert Fortgens's blog
I spent a weekend in Bogotá in October 2017 and made it my mission to find Quercus humboldtii. I had had the species in my sights for a long time: it is the only oak native to South America, and...
Quercus humboldtii in Bogotá
Posted Sun, 2017-12-10 19:29 in Roderick Cameron's blog
It is our vision that when the years roll on and you reach your eighties that you do not down size nor retire but that you have projects. To realise this we took back from our tenant farmer an...
Posted Thu, 2017-12-07 20:52 in James Harris's blog
For some time I have been interested in and puzzled by Quercus castaneifolia, because in Mallet Court Nursery I have observed two distinct forms.
Quercus castaneifolia
Posted Wed, 2017-12-06 15:45 in James Harris's blog
I first met Bruce Bacon in 1984, and since then and through his Garden Farme, I learned about soils, fruits, salads, vegetables, organics, permaculture, sustainable ag, arbor care, tree...
Posted Sat, 2017-12-02 11:09 in Dan Keiser's blog
In August 2017, during a visit to Vancouver, British Columbia, I was able to visit an experimental plantation of Garry oak (Quercus garryana) at the University of British Columbia. 
Posted Fri, 2017-10-13 11:53 in Roderick Cameron's blog
I have always suspected that there was a secret hawthorn society hiding within the IOS. Last weekend, the Belgian Dendrology Society held a full-day event devoted to Crataegus. Three past and...
Posted Tue, 2017-10-10 11:46 in Charles Snyers's blog
Here in Finland we have short summers and long winters. Our domestic trees can get ready for the winter by stopping growing early enough. But if we try to grow something that has no experience...
Posted Sun, 2017-10-08 18:13 in Tuomo Isokuortti's blog
Harriet Tupper tells about oaks in collections seen in Normandy on an IDS tour.  
Posted Sun, 2017-10-01 12:10 in Harriet Tupper's blog

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