Buddleja davidii 'White Spread' is a Dutch cultivar developed in 1993 by the Research Station for Arboriculture, Boskoop.
Several colleges like Portland Community College of Oregon, offer Certificates in Landscape Technology, through courses which include arboriculture, tree identification and other horticulture classes.
An example of Second Empire architecture, the house is best known for being the home of John Davey, a pioneer in the science of tree surgery and the founder of the Davey Tree Expert Company.