History of the Arboretum
A celebrated Olmsted park and botanic garden
Washington Park Arboretum has a long and complex history. Prior to white colonial settlement, the land was home to Coast Salish people, who had several villages in the Union Bay area. Towards the end of the 19th-century, it was owned by the Puget Mill Company, which logged the land’s large trees in the 1880s. In 1900, the site became a city park, Washington Park (one of Seattle’s first), and was home to a speedway for horse racing and a sanitary fill.
In 1903, the Olmsted Brothers Landscape Architects firm created the design for Lake Washington Boulevard, which weaves through to present-day Arboretum, as part of its comprehensive plan for Seattle parks and parkways. Washington Park remained largely undeveloped in the 1910s and 1920s.
Interest in creating an Arboretum in Seattle had been brewing for three decades among staff at the University of Washington and members of the community. The Arboretum was officially established in 1934. The following year, the Arboretum Foundation was formed to raise funds for the nascent botanical garden. In 1936, thanks to a donation from the Seattle Garden Club, the Olmsted Brothers were hired to create a design plan.
With the Great Depression in full swing, much of the early construction and planting work in the Arboretum was carried out through the Works Progress Administration. The speedway became Azalea Way, one of the central features of the Arboretum. In the decades to come, especially under the tenure of Brian Mulligan (director from 1945 to 1972), the Arboretum’s plant collections developed, flourished, and grew to what you see today.
- HistoryLink, a free online encylopedia of Washington State history, also published an excellent short history of the Arboretum in January 2013.
- Read a detailed historical review (PDF 12.0 MB), commissioned by the Arboretum and Botanical Garden Committee in 2003 and co-authored by BOLA Architecture & Planning and Karen Kiest Landscape Architects.
Jan 13, 2021
In early December 2020, we created a temporary online Arboretum Gift Shop filled with nature-themed treasures from our on-site store. Designed for the holiday season, it remained opened until December 21 and netted more than $6,500 for the Arboretum. Thanks to...
Jan 4, 2021
We know that fall is the best time to plant shrubs in our region. But what are some of the more beautiful, useful, and easy-care varieties to grow? In the latest issue of the Arboretum Bulletin, garden writer Barbara Ashmun profiles a dozen of her favorite shrubs...
Dec 10, 2020
In late November, the Arboretum opened a new composting restroom in the bus-turnaround area of the Pacific Connections Garden. Solar-powered, ADA accessible, and odorfree, it is first restroom of its kind in a Seattle city park. The unit will alleviate the lack of...