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THE UNIVERSITY OF WASHINGTON ARBORETUM 
THE UNIVERSITY OF WASHINGTON ARBORETUM, located adjacent to the campus in Seattle, is both a repository for 
hundreds of trees and shrubs, many of them newly introduced into the region, and a focal point for the testing, 
propagating and hybridizing of varieties and species of ornamental plants, such as the rhododendron, the azalea 
and the camellia, which are so definitely making a place for themselves in contemporary floriculture. The 
Arboretum is under the direct supervision and management of the University. 
On the already well-wooded 267 acres comprising the Arboretum, more than 35,000 trees, shrubs and vines 
have been planted up to the present time. In nurseries and propagating houses located on the grounds another 
20,000 young plants are being developed. Ornamental plantings of rhododendrons, azaleas, dogwoods, crabapples, 
hawthorne, lilacs, hydrangeas and other particularly colorful woods are destined for the drives which attract 
scores of motorists the year round. Many such plantings have already been accomplished. 
Historically, as a garden, the University of Washington Arboretum is young. It has been developed in line 
with plans prepared by Olmsted Brothers, landscape architects of Brookline, Massachusetts, the land having 
been obtained on a lease in perpetuity from the Seattle city park commissioners. Funds for the project originally 
emanated from the work of the Arboretum Foundation, a group of civic-minded citizens throughout the State 
who early envisioned its potentialities, and from grants by the Federal Work Projects administration. More recently 
the state legislature has made substantial appropriations to the University for carrying on the work now so 
well established. The Foundation continues to function as a non-profit organization to further the development 
of the Arboretum. 
_ Planting developments so far have included lovely Rhododendron Glen, Azalea Way, Camellia Garden, and 
Woodland gardens in addition to the Boulevard ornamental plantings already referred to, and the work in the 
nurseries. 
Rhododendron Glen is a nine-acre area planted with more than 550 varieties and species of genus Rhododendron, 
many of them brought from Asiatic areas such as India, China and Burma. Included in the site are the Tenny 
collection of 300 plants, representing some twenty-odd species, among them some natives of the Himalaya moun- 
tains grown from seed by the late Dr. Cecil Tenny and presented to the Arboretum by his widow as a memorial 
to him. The Glen presents a succession of blooms from early March through the middle of June. 
The Dexter collection from the estate of Charles O. Dexter, New Bedford, Massachusetts, comprising a large 
group of well-developed hybrid rhododendrons, has also been presented to the Arboretum and planted in the 
Glen. Various garden clubs have provided funds for purchasing species rhododendrons abroad, particularly from 
famous English gardens, while in Arboretum greenhouses a fine collection of named hybrids have been developed, 
using scions from comprehensive collections of private and commercial growers in the Seattle area. 
Arnold Arboretum, Boston, Kew Gardens, London, and Edinburgh Botanical gardens have at various times 
presented the University of Washington Arboretum with seedlings of more than 225 species and varieties of 
this plant. 
Rhododendron Glen seems destined to become one of the most important areas in the nation for this luxuriantly 
blooming plant, which is, of course, the Washington State Flower. 
Azalea Way has been sponsored by the Seattle Garden Club. Planting along its gently curving lane was begun 
late in 1939 and has continued each year. When completely planted the area will include approximately 11,000 
