Summer Interests from the Washington Park Arboretum

Selected cuttings from the Washington Park Arboretum (July 31, 2017 - August 13, 2017)
Clif Edwards
Selected cuttings from the Washington Park Arboretum
(July 31, 2017 – August 13, 2017)

1)   Abies concolor                     White Fir

  • This tall conifer, native to the mountains of western North America, adds an interesting silvery blue backdrop to our Legume collection.
  • The young trees are valuable in the Christmas tree trade for their ornamental look.
  • The specimens in grid 16-6E were planted in 1938.

2)   Acer davidii                     David’s Maple

  • This tree is named in honor of French priest and naturalist Armand David, who first described the species while on mission in central China.
  • This species of maple falls into a loose category called “snake bark maples”, having smooth green bark with contrasting vertical stripes.
  • Examples of this tree can be found near the Peony Collection on Arboretum Drive.

3)   Calycanthus occidentalis                     California Spicebush

  • This evergreen shrub is native to California in moist habitats under 5,000 feet.
  • The aromatic flowers, that have a Magnolia-like appearance, show between summer and fall.
  • These plants belong to a small genus with only four species described. This species, being one of two in North America, can be found in grid 29-3E.

4)   Hydrangea macrophylla varieties                     Hydrangea varieties

  • At the intersection of Arboretum Drive and the Rhododendron Glen is an impressive collection of hydrangeas in flower.
  • The varieties in this species can range from white to pink, red, blue, and purple.
  • Now widely cultivated in many countries, this plant is native to Japan.

5)   Sophora prostrata                     Kowhai

  • This small tree or shrub is native to the southeastern island of New Zealand.
  • Unusually small foliage and bright stems are interesting characteristics of this tree.
  • The seed pods provide a nice contrast to the small leaves.
  • This tree can be found in the Legume Collection.