Claire Hanley Arboretum, Research arboretum at Oregon State University Extension campus in Medford, Oregon.
Claire Hanley Arboretum is a research facility at Oregon State University's extension campus in Medford, containing mature trees and trial grounds. The grounds display multiple tree species and experimental orchards arranged for observation and comparison of different varieties.
The site originated as part of the Michael Hanley Farmstead but was sold by the Hanley sisters in 1957 to establish a research center. This transformation from farm to scientific facility marked the beginning of its current role studying plants and trees.
The arboretum is named after Claire Hanley, one of the sisters who donated the family land for research. Today it functions as a learning hub where local gardening groups and researchers work together to study and preserve plant varieties.
The arboretum sits on accessible grounds with marked pathways suitable for visitors of different abilities. The best time to visit is during the growing season when the diversity of plantings is most visible.
Many trees in the collection were planted as memorials during the early 1960s by local garden club organizations. These commemorative plantings give the grounds a personal history that visitors often miss.
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