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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 

Latest Articles

Discussing remedial pruning at Penrice © Sairus Patel
First OODs since 2019 held in the UK
Miss Emily Talbot helps plant an oak (number 1 or 2, Quercus ×rosacea aff. robur), 1904; image courtesy Thomas Methuen-Campbell
What species of oak were planted by Royals at Penrice?
The ginger seedlings are growing well, but soil fertility has been completely destroyed © Kuoh-Cheng Yang
Latest news on Fagaceae conservation efforts in Taiwan

Latest Blog Posts

An unusual acorn...© Chris West
Chevithorne Barton hosted an Oak Study Day on July 21, 2023
Beech tree leaf disease
Beech Leaf Disease is attacking Fagus species in North America.
The IOS recently received an inquiry from Jim Conrad about a strange phenomenon he observed on a twig of a Quercus
Falstaff at Hern's Oak
Shakespeare mentions oaks more than any other tree.
Hans-Cees Speel shares news of the website he created, which includes numerous photos of 64 oak taxa. 

Upcoming Events

Sep 17, 2023 to Sep 24, 2023
This 7-day Tour will be led by renowned plantsman Sean Hogan of Cistus Nursery. The first part of the trip will be based in Portland with visits to gardens and day trips to nearby locations.
Oct 12, 2023 to Oct 16, 2023
The event will feature visits to important oak collections in three gardens in Texas, as well as other attractions in Houston and a tour of southwest Hill Country.