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New Zealand Oak Open Days: May 15–18, 2025

Group photo at Guthrie-Smith Arboretum
Four days exploring oaks on the east coast of North Island

Editor's Picks

Group photo at Mereweather Arboretum
Oak collections and much more in Canberra, New South Wales...
Website Editor | Aug 11, 2025
A controversial publication proposes to change the...
Roderick Cameron | Aug 05, 2025
Group photo with champion Quercus arkansana in Bokrijk Arboretum
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
A naturally occurring hybrid between Quercus robur and Q. alba.

Guthrie-Smith Arboretum

New Zealand Oak Open Days: May 15–18, 2025

Group photo at Guthrie-Smith Arboretum
Four days exploring oaks on the east coast of North Island

The International Oak Society acknowledges the generous support of the following institutions:

Supporting Institutional Members

Standard Institutional Members

Rice University