The Arnold Arboretum's sesquicentennial Director's Series traces the Arnold’s significance in the landscape architecture movement, value for the people of Boston, and leadership in creating global connections between plants and people.

Panelists include:

• Dr. Michelle Kondo, Research Social Scientist, UDSA-Forest Service

• Rev. Mariama White-Hammond, Chief of Environment, Energy, and Open Space, City of Boston

• Laurence Cotton, Consulting Producer, “Frederick Law Olmsted: Designing...

The Arnold Arboretum was founded on Friday, March 29, 1872. Exactly 150 years later, we invite you to join Lisa Pearson, Head of the Arboretum Library and Archives, for a special sesquicentennial lecture! Pearson will discuss the earliest benefactors of the Arboretum, the events surrounding the founding of the institution, and the busy first two decades during which the infrastructure and living collections were installed on the grounds.

This event will also be livestreamed to YouTube. To sign up for the virtual livestream instead,...

Make a difference as an Arnold Arboretum Field Study Guide! Training for the spring season of school programs at the Arboretum begins March 29. We are looking for outgoing and mature adults who can commit to two years of volunteering. You do not need to know about plants, but experience working with children is preferred. If you are interested, please complete an application by March 11 for an interview.

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The Arnold Arboretum is full of spectacular specimens from around the world that any visitor will appreciate. However, what they observe is only half the story. How a tree uptakes water and nutrients, stays grounded in place, stores energy, and sometimes even propagates itself, is all thanks to its roots. Join horticulturists Andrew Gapinski and Conor Guidarelli as they unearth these questions and more during an exclusive look into the extraordinary world of roots.

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Many plants that we consider to be weeds have rich ethnobotanical histories of their own that tie us closer to our environment. Your guides will explain how these "weedy" plants came to colonize this area while touching on cultural contexts and botanical identification of these wild species—as well as the cultivated medicinal species in the Leventritt Shrub and Vine Garden. Guides: John de la Parra, Associate, Harvard University Herbaria; Ernest Anemone, Co-Guide;...

Did you know that almost all of the plants in the Arboretum begin their lives in the Dana Greenhouses? Get a behind-the-scenes look of the greenhouse growing process, from seed to sprout to seedling to tree. Meet at the Bonsai and Penjing Collection above the Leventritt Shrub & Vine Garden. There is a 15 person maximum.

Learn more and register for From Seed to...

Enjoy a free guided tour of the Arnold Arboretum landscape with a knowledgeable docent. Tours are appropriate for adults and last approximately 90 minutes. History, highlights of the landscape, seasonal interest and more!

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Did you know that almost all of the plants in the Arboretum begin their lives in the Dana Greenhouses? Get a behind-the-scenes look of the greenhouse growing process, from seed to sprout to seedling to tree. Meet at the Bonsai and Penjing Collection above the Leventritt Shrub & Vine Garden. There is a 15 person maximum.

Free, registration requested and limited.

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What if your host truly didn’t want you to visit? Found you intolerable, in fact, and didn’t want you to stay? You’d think that you’d be kicked out, but... Read more about Of Monarchs and Milkweed: A Story of Coevolution, Cultural History, and Conservation