Happy Holidays from the Washington Park Arboretum!

Selected cuttings from the Washington Park Arboretum (12/20/16 - 1/3/17)
Selected cuttings from the Washington Park Arboretum
(12/20/16 – 1/3/17)

1)   Calocedrus decurrens                Incense Cedar

  • This native of Oregon and south to Baja California was first described by Colonel John C. Fremont in 1846.
  • Incense cedar is often confused with Western Red Cedar (Thuja plicata), but is distinguished by its branchlets being held vertically, its narrow pyramidal habit, and by the lack of white stomata on the leaf undersides.
  • Located north of the Wilcox Bridge (marked by a sign) and east of the Pinetum Loop Trail.

2)   Chimonanthus praecox                Wintersweet

  • Native to China (from eastern Sichuan and Hubei to Zhejiang), Wintersweet occurs in montane forests. Chimonanthus praecox has been cultivated for over 1,000 years in China where it is used in medicine and as a flavoring for tea.
  • A well-flowered specimen can be seen and sniffed on the west side of the Joseph A. Witt Winter Garden.

3)   Ilex aquifolium ‘Golden Queen’                Golden Queen English Holly

  • A sturdy broadleaf evergreen shrub, ‘Golden Queen’ is a striking presence in the winter with its deep green and cream variegation.
  • Located in the field nursery, near the service road south of Crabapple Meadow.

4)   Ilex opaca ‘Emily’                American Holly

  • This species, native to the eastern and central United States, makes a hardy evergreen tree up to 50 ft. tall.  A female cultivar, ‘Emily’ bares deep red berries during fall and winter.
  • In the United States, Ilex opaca can be a good alternative to the invasive English Holly (Ilex aquifolium).
  • A well-fruited specimen can be seen in the Pacific Connections Entry Meadow.
Close-up photo of a Pinus attenuate pine cone
Preston Pew
Close-up photo of a Pinus attenuate pine cone

5)   Pinus attenuata                  Knobcone Pine

  • Native to coastal mountains from California to southern Oregon, this tree thrives in poor soils and dry conditions.
  • Knobcone Pine is the most fire dependent western native conifer species, requiring high heat in order for its resinous cones to release seeds.
  • One can see several specimens in the Pacific Connections Garden Cascadia Forest.