September Color Appears at the Washington Park Arboretum

September 14th, 2011 by Pat Chinn-Sloan

“C” is for Conifer

Selected cuttings from the Washington Park Arboretum for September 2011

Selected cuttings from the Washington Park Arboretum for September 2011

1)  Cedrus libanii ssp. atlantica ‘Aurea’ (syn. Cedrus atlantica ‘Aurea’)

  • Native to the Atlas Mountains of Morocco
  • Young leaves have a bright yellow cast, maturing to blue-green.
  • This specimen is located in the North Pinetum.

2)  Chamaecyparis lawsoniana x pisifera

  • Hybrid of the Japanese Sawara cypress and our own Port Orford cedar
  • We have a specimen along the Pinetum Trail, south of the Wilcox Bridge.

3)  Cryptomeria japonica ‘Nana’

  • This is a dense, dwarf tree with spiraling, blue-green leaves.
  • A 50+ year old specimen is located in the North Pinetum.
  • Cryptomeria is native to China and Japan.

4)  Cunninghamia lanceolata     (false) China Fir

  • Closely related to Sequoia, the foliage of Cunninghamia ranges in color from bright green to powdery blue.
  • There are several specimens of this conifer in the North Pinetum.
  • Native to China and Taiwan

5)  Cupressus torulosa

  • An upright tree with pendant branching, this species is native from Himalayan China to Vietnam and India.
  • This specimen is on the trail to the south of the Wilcox Bridge in the Pinetum.

**Note: For a translation of this article in Estonian by Anna Galovich, please check out

UW Student Reports on Stormwater Planting at CUH

September 14th, 2011 by Jennifer Youngman, Program Coordinator
Rain garden at CUH

Proud students admiring their hard work planting up the rain garden.

The Arboretum has its bog garden. The Center for Urban Horticulture (CUH) has its rain garden. A new rain garden is part of a larger project designed by Berger Partnership to direct rainwater from the roofs of Merrill and Isaacson Halls to the existing roof garden, an as-yet undeveloped hillside garden, and collection bins (rain gardens). When funding is found to complete the project, the CUH will present a completely integrated water system which collects rain, delivers it to the gardens, and drains to Lake Washington.

Lisa Haglund, a recent graduate with a degree Community, Environment, and Planning  in the UW College of Built Environments, created the planting plan for the rain garden with guidance from the UW Botanic Gardens’ Dr. Kern Ewing, David Zuckerman and Barbara Selemon. In May, students from Maggie Rose’s Ingraham High School science classes prepared the site with Haglund and Patrick Mulligan, after Selemon arranged for Haglund to give a presentation on stormwater at their school. Ingraham currently has no available site for rain garden construction, so the Ingraham students’ trip to the CUH was funded through GROW, a program designed to engage high school students with the UW Botanic Gardens.

Lisa describes her experience working with high school students:

From the first field trip to the last, I saw an awakening interest in plants, planting, maintenance techniques, and natural systems take root in many of these young people. Through experiential learning students gained knowledge of how plants and soils act to capture and filter out the contaminants in runoff, the value of freshwater and freshwater ecosystems, and how each of them can make a difference by implementing Low Impact Development  projects at their homes and schools.

Lisa’s complete LHaglund_Stormwater_GROWProgram with photos. Visit Lisa on LinkedIn.