The Miriam Osborn Memorial Arboretum

One of the unique aspects of The Osborn is our Miriam Osborn Memorial Arboretum. It is the only private arboretum in Westchester County and has been recognized as a Level I Accreditation by the ArbNet Arboretum Accreditation Program. Spending time in nature is an important part of any wellness program, and our residents and staff benefit from our beautiful surroundings every day.

The Miriam Osborn Memorial Arboretum at a glance:

• 56 acres
• 983 trees
• 132 species

• 8 types of Magnolias (Teddy bear, Southern, Jane, Bigleaf, Star, Sweetbay, Golden Gift, Saucer)
• Planted 32 trees and 8 new species since the Spring of 2024 (Paperbark Maple, Laceleaf Japanese Maple, Blue Atlas Cedar, Deodar Cedar, Hackberry, Alaskan Cedar, Teddy Bear Magnolia, Bigleaf Magnolia, Sweetbay Magnolia, Black Gum, Japanese White Pine, Snow Fountain Cherry, Scarlet Oak, Weeping Willow, Bald Cypress, American Elm.
• Trees that we would like to add with your support: Oriental Spruce, Ohio Buckeye, Limber Pine, Lacebark Elm, European Beech, Black Oak, Red Buckeye, Swiss Stone pine, and Yellow Buckeye

Care of the Arboretum is extensive and includes removal of trees that pose a risk to residents and the property. There is also ongoing pruning, disease control and fertilization. We label all the trees, update and share maps so our residents, staff and visitors can enjoy them. We also plant new trees to achieve balance and diversity of species. Throughout the year, we offer educational tours and programing.

We thank our residents and the community who support the Arboretum on the beautiful Osborn campus for now and for those in the future to enjoy. Please reach out to Cathy Levy at 914-925-8372 or clevy@theosborn.org  if you are interested in learning more.