Acorns

Oaks Behaving Strangely

By Allen Coombes | January 14, 2025

Allen Coombes shares observations of unexpected phenology in oaks in the University of Puebla BG.

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Seed Exchange Guidelines

By Guy Sternberg | April 17, 2022

What to know about participating in the IOS Seed Exchange

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Acorn Onomastics

By Roderick Cameron | December 1, 2021

Spanish has many words related to acorns.

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The Acorn-ulator

By Website Editor | October 14, 2021

Using acorns to teach maths

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Editor's Picks

Oaks in Oz: Australian Oak Open Days, May 8–13, 2025

Oak collections and much more in Canberra, New South Wales...

Website Editor | Aug 11, 2025

Nay! Its Née, not Neé

A controversial publication proposes to change the...

Roderick Cameron | Aug 05, 2025

Group photo with champion Quercus arkansana in Bokrijk Arboretum

Belgian Oak Open Days: May 29–June 1, 2025

A team of reporters share their take on the event.

Website Editor | Jun 22, 2025

Plant Focus

Quercus ×bimundorum ‘Crimschmidt’ growing in the Prairie Arboretum, Freeman, South Dakota, USA © Dirk GiseburtQuercus ×bimundorum ‘Crimschmidt’ growing in the Prairie Arboretum, Freeman, South Dakota, USA © Dirk Giseburt

Hybrid Highlight: Quercus ×bimundorum E.J. Palmer, the ‘Oak of Two Worlds’

A naturally occurring hybrid between Quercus robur and Q. alba.