Coordinates: 37°25′59″N 122°10′05″W / 37.433°N 122.168°W
The Stanford University Arboretum is an arboretum located on the grounds of Stanford University in Stanford, California. It is open to the public daily without charge.
The arboretum began with the indigenous live oaks on Leland Stanford's estate, which later became the university campus, augmented by a variety of trees that he collected. In 1885 Stanford contracted with noted landscape designer Frederick Law Olmsted to plan the grounds. An 1888 memorandum by Olmsted, and signed by Stanford, states that the then-extant University Forest and the Arboretum were to be combined, and that "In this enlarged Arboretum it is desired that there shall be exhibited to advantage all the trees and wood plants of the world that may be expected to grow to mature natural forms under the climatic and other conditions of the locality." As Jane Stanford said in her 1903 address to the Stanford trustees:
However, these plans for a major tree collection within the arboretum grounds did not materialize. A report by the Olmsted Brothers (May 8, 1914) states: "The so-called 'Arboretum' extends on either side of the main approach from the County Road. At present the name Arboretum is a misnomer as the name implies that a great variety of trees in botanical order are to be found there. It consists, as a matter of fact, mostly of a thick plantation of Blue Gums and Monterey Cypress." Subsequently, the Department of Botany was given supervisory control of the arboretum in order to utilize it more fully for scientific purposes. During the twentieth century the arboretum was sometimes under development, but seldom given great attention.