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Editor's Picks

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Who was Quercus grahamii named in honor of?
Roderick Cameron | Dec 17, 2024
Quercus rubra in autumn
The Tree of the Year Association in Germany selected a non-...
Website Editor | Dec 16, 2024
Image from Enarrationes
A 16th century commentary on the medicinal property of oaks...
Website Editor | Dec 16, 2024

Plant Focus

Quercus magnosquamata acorn
A  little-known species from the northern Zagros forests of Iran

Blogs

IOS member Christy Powell, Horticulture Manager at San Diego Zoo Wildlife Alliance, shared an inspiring news story.
Posted Mon, 2024-04-15 22:23 in Website Editor's blog
I recently had the opportunity of visiting the US National Champion Quercus robusta.
National Champion Quercus robusta
Posted Mon, 2024-04-15 18:37 in Michael Eason's blog
It was a great pleasure for me to be able to write about my 31 years of involvement with Arboretum Trompenburg in Rotterdam.
Pages from Gert's book
Posted Thu, 2024-02-15 12:55 in Gert Fortgens's blog
Veteran oaks are under threat of being removed
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Posted Sat, 2023-12-23 13:48 in Hugo Ribeiro's blog
A new stamp issued by the United States Post Office in August 2023 depicts an oak, though not in a form that most quercophiles would recognize.
Oak featured on a new US stamp
Posted Sun, 2023-12-10 13:33 in Roderick Cameron's blog
A visit to Białowieża Forest in Poland
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Posted Mon, 2023-10-23 12:26 in Amit Zoran's blog
Chevithorne Barton hosted an Oak Study Day on July 21, 2023
An unusual acorn...© Chris West
Posted Mon, 2023-08-07 18:41 in Chris West's blog
Beech Leaf Disease is attacking Fagus species in North America.
Beech tree leaf disease
Posted Tue, 2023-06-20 19:52 in Website Editor's blog
The IOS recently received an inquiry from Jim Conrad about a strange phenomenon he observed on a twig of a Quercus
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Posted Tue, 2023-06-20 19:51 in Website Editor's blog
A new oak-themed mural beautifies an old brick wall in downtown Woodland, California.
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Posted Wed, 2023-06-14 15:02 in Website Editor's blog
Shakespeare mentions oaks more than any other tree.
Falstaff at Hern's Oak
Posted Sun, 2023-04-23 15:56 in Roderick Cameron's blog
Hans-Cees Speel shares news of the website he created, which includes numerous photos of 64 oak taxa. 
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Posted Wed, 2023-04-19 11:10 in Hans-Cees Speel's blog

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