List of ArbNet-Accredited Arboreta with an IOS Connection

These gardens below are institutional members of the International Oak Society or have a strong link to an IOS  member. Click on a garden name to view their website. If your arboretum has been inadvertently omitted from the list, please let us know by writing to




Arboretum Kalmthout


Arboretum Wespelaar


Brooklyn Botanic Garden

New York, USA

Chicago Botanic Garden

Illinois, USA

Donald E. Davis Arboretum

Alabama, USA

Grigadale Arboretum


Longwood Gardens

Pennsylvania, USA

Morris Arboretum of the University of Pennsylvania

Pennsylvania, USA

Mount Auburn Cemetery

Massachusetts, USA

Polly Hill Arboretum

Massachusetts, USA

Starhill Forest Arboretum

Illinois, USA

Stephen's Lake Park Arboretum

Missouri, USA

Taltree Arboretum & Gardens

Indiana, USA

The Bartlett Tree Research Laboratory and Arboretum

North Carolina, USA

The Holden Arboretum

Ohio, USA

The Morton Arboretum

Illinois, USA

The University of Oxford Botanic Garden & Harcourt Arboretum

United Kingdom

UC Davis Arboretum

California, USA

Westonbirt, The National Arboretum

United Kingdom