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1927 Map of the Arboretum


Head Arborist John DelRosso discusses the oak collection at an event for the Sargent-Olmsted Society. Kathleen Dooher
Arborist John Delrosso at a Sargent-Olmsted Society event

The Arnold Arboretum relies on the strength of a dedicated community of supporters

Part of a unique public/private partnership of the City of Boston and Harvard University, the Arnold Arboretum is largely self-financed, with over 95% of annual operating funds coming directly from members, donors, and philanthropic endowments. Contribute to our mission to engage you and the world in the study of plants in one of America's most beautiful landscapes—JOIN US as an annual member, provide  major support as a member of the Sargent-Olmsted Society, make a one-time gift, or learn about making a planned gift to the Arboretum as a part of your estate planning.

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