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Open every day. Free every day.
Thanks to members and donors.

  • Visit
  • Events
  • Education
  • Plants
  • Research
  • Stories
  • Support
  • About Us
  • Make a Gift
  • Volunteer
  • Arnoldia

Genus: Quercus

  • Quest for Southern Red Oak—North of the Mason-Dixon Line

    Arnoldia, Notes from the Field, Plant Exploration
    Quest for Southern Red Oak—North of the Mason-Dixon Line
  • Oaks Take Their Time

    Director’s Posts, Landscape, Living Collections
    Oaks Take Their Time
  • Revisiting the Mystery of the Bartram Oak

    Research, Arnoldia, Feature
  • Modern Oak

    Plant Profiles
    Modern Oak
  • A Botanist in Borneo: Understanding Patterns in the Forested Landscape

    Biodiversity, Arnoldia, Botany, Feature, Wildlife
    A Botanist in Borneo: Understanding Patterns in the Forested Landscape
  • Valuing Biodiversity

    Biodiversity, Arnoldia, Feature
    Valuing Biodiversity
  • Wood Under the Microscope

    Arnoldia, Botany, Education, Visual Essay
    Wood Under the Microscope
  • Existing through Change: Quercus alba

    Arnoldia, Plant Profiles
    Existing through Change: Quercus alba
  • Insights from a Sole Survivor: Quercus castaneifolia

    Botany, Arnoldia
    Insights from a Sole Survivor: Quercus castaneifolia
  • Witness Tree: What a Single, 100-Year-Old Oak Tells Us About Climate Change

    Arnoldia, Climate Change
    Witness Tree: What a Single, 100-Year-Old Oak Tells Us About Climate Change
  • A Tour of the Oaks of the Arboretum des Pouyouleix

    Arnoldia, Community, Travel
    A Tour of the Oaks of the Arboretum des Pouyouleix
  • Cork: Structure, Properties, Applications

    Botany, Arnoldia
    Cork: Structure, Properties, Applications
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Rooted in history.

The Arnold Arboretum sits on land long inhabited by Indigenous Peoples, most recently the Massachusett Tribe, and on property purchased with wealth from goods produced by enslaved persons.

Free and open every day.

We are committed to the Olmstedian principle that everyone is entitled to open space, so our gates are open to everyone, every day, free of charge.

Funded by our community.

The Arnold Arboretum has been funded by the generosity of the supporting public since our founding in 1872. Give today and continue that legacy.

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