US National Arboretum


Tour des Trees Riders Plant Tree at the Arboretum

Tour des Trees logo Bicyclists on the Tour des Trees will pass through the Arboretumís gate at 11 am on Saturday, October 8, to tour the grounds and help to plant a tree. The stop is part of a seven day, 500-mile ride that raises funds and awareness for the Tree Research and Education Endowment (TREE) Fund. The riders will dismount at the Maple Collection where they will help plant an Acer griseumA. pseudoplatanus, a rarely seen hybrid between two different, but related sections of the maple genus. The ride began in Virginia Beach on Oct. 2; the Arboretum is one of the last stops. The riders will continue on for lunch at Casey Trees and then an afternoon grand finale ceremony at American University.

For more information about the Tour des Trees 500-mile ride, visit

The TREE Fundís mission is to identify and fund projects and programs that advance knowledge in the field of arboriculture and urban forestry to benefit people, trees, and the environment.

For more information about the TREE Fund, visit

Acer griseumA. pseudoplatanus...
... is a rarely seen hybrid between two different, but related sections of the maple genus. Not much is known about this hybrid combination, but it is thought to have spontaneously arisen in cultivation from seed collected from the paperbark maple, Acer griseum. The leaves are not trifoliate as in the paperbark, but rather deeply lobed with purple undersides, the color being inherited from the purple foliaged sycamore maple (Acer pseudoplatanus 'Atropurpureum'). Sycamore maple is extremely hardy, and adaptable, tolerating salt, high pH, and urban conditions but can also be invasive. This hybrid combination may combine the adaptability of sycamore maple with the ornamental features of the paperbark maple, in a smaller growing, sterile tree for the urban landscapes.

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Last Updated  October 5, 2011 2:41 PM

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