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Editor's Picks

Karl Georg Theodor Kotschy was an Austrian botanist and...
Eike Jablonski | Jun 11, 2016
Quercus grisea - Greenlee County, AZ
This article is an account of the oak field trip organized...
Charles Snyers | Sep 22, 2017
North American oaks have a northern temperate origin and...
Website Editor | Oct 12, 2017

Plant Focus

Quercus acutissima subsp. kingii
Quercus acutissima Carruth. is a species whose natural distribution covers a vast territory in East and Southeast Asia, from central Nepal...

Blogs

On a recent trip to Bogotá, Colombia I was able to collect acorns from several Quercus humboldtii growing as street trees.
Quercus humboldtii
Posted Thu, 2018-10-11 21:59 in Roderick Cameron's blog
Quercus suber is a Mediterranean oak, but some years ago I learned it had a curious history in North America.
Posted Thu, 2018-10-11 01:53 in David Taylor's blog
After moving it a month ago, we now have re-looked our website, making it fully responsive.
New IOS Theme 2018
Posted Thu, 2018-09-27 13:20 in Charles Snyers's blog
We moved our website to A2 Hosting's data center in Michigan on Friday. The migration went very well.
Posted Tue, 2018-08-28 05:15 in Charles Snyers's blog
I have recently been asked to write or update the oak entries for Trees and Shrubs Online. This is a project to create a truly modern reference to temperate trees and shrubs. Currently there are...
Quercus depressa
Posted Mon, 2018-08-20 16:39 in Allen Coombes's blog
I enjoy finding giant trees, and always keep an eye open and a tape measure handy. Some of my finds are only giants in the sense that they are large for their species, such as my National...
Posted Thu, 2018-08-16 18:09 in Ryan Russell's blog
Abundant rain in southwest France in the early part of this year has fostered a bumper seed crop at Arboretum de la Bergerette, some (such as Quercus emoryi) already ripe: thus my thoughts turn...
Posted Thu, 2018-08-16 15:31 in Shaun Haddock's blog
I decided to develop a map which would allow the registration of all the oak trees in Israel.
Posted Tue, 2018-08-14 21:07 in Ezra Barnea's blog
It is written in the entry for Quercus chrysolepis at www.efloras.org that “Quercus chrysolepis is one of the most variable North American oaks.” If this comment relates primarily to the mature...
Posted Tue, 2018-08-14 20:20 in Dirk Giseburt's blog
Those coming to the IOS Conference in Davis, CA in October will see one of the best oak collections in the U.S. We invite you to include in your travel plans a visit to a different world, the...
Posted Fri, 2018-06-15 23:33 in Robert McCartney's blog
This year I harvested acorns in Grigadale Arboretum rather late in the season (April), at a stage when most species had dropped them. As trees are planted quite close together, in some cases I...
Posted Fri, 2018-06-15 16:07 in Roderick Cameron's blog
I conducted studies under the supervision of Dr. Ranbeer S. Rawal in the laboratory and an experimental nursery to understand seed germination behavior in relation to desiccation for different...
Posted Tue, 2018-06-12 18:56 in Meenakshi Negi's blog

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