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Editor's Picks

The oak tree in Skjomendalen © Gerhard Sørensen-Fuglem and Cecilia Piccirilli Bjerkeset
An oak grows north of the Arctic Circle in Norway
Website Editor | Aug 14, 2023
Unusual symptoms linked to phytoplasma infection in Quercus humboldtiii, Colombia © Eric Boa
Symptoms linked to phytoplasma infection found in Quercus...
Website Editor | Aug 06, 2023
Different names are being used for one species.
Website Editor | Jun 20, 2023

Plant Focus

A small but mature Alabama sandstone oak producing acorns © Patrick Thompson
A Critically Endangered dwarf oak 

Arboretum de Chocha, France

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Michel Duhart

Published May 2022 in International Oaks No. 33: 117–126


I have always been drawn to trees. I remember planting a Quercus rubra in my family’s

garden when I was five years old. Now it’s huge!

In 1975, I came into the possession of a plot of land on the outskirts of Ustaritz in the French Basque Country where I could create a small arboretum. The plot’s dimensions, orientation and composition were a rather good match for my projects: three hectares along a north-south slope with moderately acidic soil (pH 5-6). Vegetation in the Basque Country enjoys a fairly favorable climate with relatively mild winters, bright sunshine and lots of it, and high annual rainfall (approximately 1,500 mm per year).