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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...

Two weeks exploring pine-oak forests and botanic gardens around Mexico City, Puebla, Oaxaca, and Monterrey. Pre tour to see archeological site. Post tour to see 12,000-ft elevation oak forest at Nevado de Colima, to Morelia, and to Tlalpujahua.

Species Spotlight: Quercus hypoleucoides A. Camus

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: silverleaf oak). 

Quercus humboldtii in Bogotá

Quercus humboldtii in Bogotá

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 so the closest non-cultivated oak to my residence in Montevideo, Uruguay (a mere 4,700 km as the crow flies—though it might take a relay of crows to make the trip!).

A New Quercetum!

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 area of land to add to our garden. We decided to plant out a collection of oaks.

Quercus castaneifolia: Two Distinct Forms?

Quercus castaneifolia

For some time I have been interested in and puzzled by Quercus castaneifolia, because in Mallet Court Nursery I have observed two distinct forms.

Bruce Bacon (1940 - 2017)

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 propagation, prairie restoration, forest management, wetland preservation, weeding, mulching, woodchipping, landscaping, woodstove heating, bee keeping, domestic geese, sandhill cranes, the I-Ching, cooperatives, collaboratives, allies, CSA's, resistance, revolution, kitchen table philosophy... and the list goes on.

American Oaks Share a Common Northern Ancestor

North American oaks have a northern temperate origin and only later colonized Mexico and Central America, according to a new study. 

New Mexico 2017

Quercus grisea - Greenlee County, AZ

This article is an account of the oak field trip organized by Michael Meléndrez in New Mexico (and a bit of Arizona) in August 2017. 

Czech Republic Oak Open Days

The house at Plaček Quercetum

Twenty-six participants from ten countries arrived to take part in the European celebration of the IOS’s twenty-fifth birthday at Dušan Plaček’s Quercetum near Podĕbrady in the Czech Republic. 

The UC Davis Arboretum and Public Garden will host the next International Oak Society Conference on the University of California, Davis campus from October 21 to 24, 2018. Registration closed on September 15.

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