WPA Tree Removal Notification

June 28th, 2011 by UWBG Horticulturist

WPA tree removal scheduled for Thursday (6/30):

Tsuga heterophylla (Western Hemlock)

WPA Native Matrix

Location: Along Arboretum Dr. E., field nursery fence row. Grid 28-4E

Status: Standing dead, in decline for several years prior

Targets: Pedestrians, vehicular traffic along Arboretum Dr and other UWBG plant collections

Cause: Cumulative root impacts from road and infrastructure maintenance and develpment.

UWBG tree crew will perform removal and responsible for all public safety precautions. Drive will be kept open, traffic will be detoured around work zone.

Postings on-site, Graham Visitor center and on UWBG website.



David Zuckerman

Horticulture Supervisor

UW Botanic Gardens

VM 206.543.8008

FX   206.616.2971


June Color Appears at the Washington Park Arboretum (Part II)

June 22nd, 2011 by Pat Chinn-Sloan

Selected cuttings from the Washington Park Arboretum (2nd half of June 2011)

  1. Acer macrophyllum ‘Kimballiae’ (cut leaf Oregon maple)
  2. Lithocarpus densiflorus (tanbark oak)
  3. Neolitsea sericea
  4. Styrax obassia (bigleaf snowbell tree)
  5. Trochodendron aralioides (wheel tree)

Complete details.

WPA Tree Removal Notification

June 21st, 2011 by UWBG Horticulturist

WPA tree removal scheduled this week: 6/22-24

UWBG plant collection accession #:  88-62-A

Acer rubrum var trilobum (Carolina Red Maple)

Location: North Pinetum, aka Conifer Meadows, Grid 42-4W

Status: Standing Dead

Cause: Unknown, however suspect of phytophthera and abiotic stress during 2007 irrigation mainline installation. Evidence of fungal disease under bark.

UWBG tree crew will perform removal and is responsible for all public safety precautions and possible trail closures.

Postings also on-site and at Graham Visitors Center



David Zuckerman

Horticulture Supervisor

UW Botanic Gardens

VM 206.543.8008

FX   206.616.2971


Ethical Gardening Book by UWBG Director Reichard Reviewed

June 17th, 2011 by Tech Librarian, Tracy Mehlin

Conscientious Gardener book cover

Are you a conscientious gardener?

How up-to-date are you on pest and invasive plant management, peat and vermiculite, water conservation and coexistence with native animals? Dr. Sarah Reichard, Professor and Acting Director of the UW Botanic Gardeners, has just made it a whole lot easier to garden responsibly with her 2011 book, The Conscientious Gardener: Cultivating a Garden Ethic.

Reviews of the book:

More book reviews by Miller Library staff can be found in the Gardening Answers Knowledgebase

June Color Appears at the Washington Park Arboretum

June 9th, 2011 by Pat Chinn-Sloan

Selected cuttings from the Washington Park Arboretum for June 2011

  1. Aesculus pavia (Red Buckeye)
  2. Lonicera ciliosa
  3. Lonicera maackii var. erubescens
  4. Lithocarpus densiflorus var. echinoides (Dwarf Tan Oak)
  5. Laburnum x watereri ‘Vossii’ (Hybrid Goldenchain Tree)

Complete details.

Aquatic Weed Symposium – July 13, 2011

June 7th, 2011 by UWBG Horticulturist

A loosestrife by any other name. . .

If you have trouble remembering this plant’s name, you might try thinking of the strife it has let loose on our wetlands.

In 2009, the Department of Ecology awarded the UW Botanic Gardens a 5-year grant for the control of garden loosestrife (Lysimachia vulgaris), a class B noxious weed mandated for control by the King County Noxious Weed Control Board. Now we’re hosting a symposium featuring the latest observations and expertise on aquatic weed management.

In his keynote address, Steve Manning, founder and president of Invasive Plant Control, Inc., will present economically and environmentally sound techniques for controlling invasive aquatic weeds. You’ll also hear from King County Noxious Weed Specialist Katie Messick and representatives from the UW Botanic Gardens and Seattle Parks Department. The afternoon will be devoted to a kayak or walking tour (your choice) through Lake Washington’s wetlands, one of garden loosestrife’s primary haunts in this region.

Designed for professional audiences, this symposium is open to everyone interested in aquatic weeds and their control.

Managing Aquatic Weeds: Challenges and Opportunities
Wednesday, July 13, 9:00 AM-3:30 PM
Graham Visitors Center, Washington Park Arboretum, 2300 Arboretum Dr. E, Seattle
Professional Credits: WSDA, WSNLA (pending)
Symposium with Kayak Tour, $55; Symposium with Walking Tour, $30
Box lunch included when you register by July 10: 206-685-8033 or online

June 2011 Plant Profile: Glumicalyx goseloides

June 6th, 2011 by Soest Gardener, Riz Reyes

Walking down the Soest Garden, it’s very easy to miss seeing this remarkable perennial plant all the way from South Africa. It’s a low growing evergreen perennial herb with foliage that has a pungent scent to your fingers if you touch it and if you kneel down and observe the unique tubular flowers, you’ll pick up on the “artificial chocolate” scent. What is really special about this delicate plant is its hardiness. It has survived temperatures in the lower teens (Fahrenheit) provided that it’s in a well drained spot in full sun.

Common Name: Nodding Chocolate Flower
Family: Scrophulariaceae
Location: Soest Garden Bed 8 (Southeast corner of bed)
Origin: South Africa
Height: 10-15″
Spread: 12-15″
Bloom Time: Late May and throughout the summer if deadheaded
Bloom Type/Color: Terminal racemes of nodding flowers of red/orange with a unique fragrance.
Exposure/Water/Soil: Sun-Part Shade. Moderately moist and well draining soil.

GROW participants visit CUH and the UW Farm

June 3rd, 2011 by Barbara Selemon

May Fieldtrips

Chickens made a big impression

The two days that GROW high school students visited CUH and
the UW Farm were full of sunshine. Students from Susan Barth’s horticulture class at Nova High School and students from Jessica Torvik’s horticulture/ecology classes were introduced to resources for their GROW projects through scheduled tours and activities. Maggie Roses’ science classes from Ingraham focused on working with Lisa
Haglund and Patrick Mulligan on the site prep and plant installation in the
newly restored storm water garden at CUH.

Lisa Haglund is an undergraduate in Community, Environment and Planning
and has taken on the redesign and installation of part of the storm water
garden at CUH.   For most students this was their first visit to the Center for Urban Horticulture.  A main function of the GROW program is to engage high school students with the UW Botanic Gardens through the environmental education department at the Washington Park Arboretum.

Ingraham students work with UW students and staff at CUH

These field trips provided an opportunity to interact with faculty, students and staff and see how outdoor research is conducted and how undergraduates are engaged through projects and farm education at the university.  They also could take back new knowledge and ideas in constructing their school gardens.

CUH tours and activities

Tours led by Restoration Ecologist Dr. Kern Ewing and gardener, Annie Bilotta, introduced them to research and display of plants found at  CUH. Nathan Hale students toured UBNA for 1 1/2 hr., learning about native grasses versus introduced grasses, the benefit of shading to minimize invasive weed species, the survival of oaks post fire and where and how native prairie species thrive.  Annie introduced them to the variety of plants demonstrated in the rain, fragrance and Soest gardens.

Nathan Hale students get a lesson in UBNA

Nova students were introduced to Rare Care and the Miller Seed Vault by Wendy Gibble. After a mere few minutes in the vault, the students were eager to get back outside to a warmer environment. Miller Librarians Carrie Bowman and Tracy Mehlin gave overview tours of the library and a few students came away borrowing books from the loaner collection.

Interaction with UW undergraduates

While all students spent a small portion of the visit helping Lisa Haglund prep the site for the storm water garden, Ingraham students made this the focus of their trip to CUH.  Not having a site on their school grounds to implement their own rain garden, they were bussed to CUH for a day of helping Lisa and Patrick work on her senior project.

Ingraham students help remove sod from stormwater site

Using shovels and Hori Horis to remove sod, students assisted in the clearing of unwanted weeds and grass prior to the installation of selected native plant species to be planted in the deep depressions that collect storm water runoff.

UW students from Lily Nash's class serve up lessons to Nathan Hale students

UW Farm students led Nova and Nathan Hale students on tours and students from Lilly Nash’s class led interactive sessions on soil structure, permaculture, plant identification (treasure hunt) and chicken farming to Nathan Hale students.  There was high adventure when one chicken escaped being held by a Nova student and fled far beneath a spiny holly hedge. Luckily, the UW farm student was practiced in rounding up chickens and getting them safely back to their coop. More than anything else, the chickens impressed the students and I heard pleas for the teachers to allow chickens at their schools.

Nova students learn how to grab and move chickens

Benefits of Field Trips

Funding that was provided through the GROW program enabled Ingraham and Nathan Hale students to visit the university. A major obstacle in having high school students participate in environmental learning with the UW Botanic Gardens is transportation and time away from classes. The teachers were thankful to have their students learn outside of the classroom and their students got to view actual research sites, learn about seed saving techniques, interact with undergraduates at the UW (senior project, farm student lessons) and discover the Miller Library loan system.  For the UW Botanic Gardens, the reward may be the lure of future students interested in restoration, conservation, ecology and/or horticulture.


Nova students learn about soil structure

Students view the cobb oven used by UW farm students to make pizza

Vendor Showcase at CUH for Event Planners

June 1st, 2011 by Tech Librarian, Tracy Mehlin
NHS Hall at the Center for Urban Horticulture

NHS Hall at the Center for Urban Horticulture is perfect for your next wedding or staff retreat.

Purpose: This event will showcase indoor and outdoor venues at UWBG Center for Urban Horticulture and nearly 50 vendors who serve our rental customers for their business meetings, symposiums, conferences, classes, graduations, weddings, bar/bat mitzvahs, auctions, memorial services, parties, fundraisers, etc.

Who’s Hosting: UWBG Rental Program in collaboration with nearly 50 vendors

Who’s Invited: UW department representatives, government representatives, event planners, wedding planners,  the general public shopping for a beautiful rental facility and top-notch vendors

When: Thursday, July 21, 2011, 3:00 – 7:00 p.m.

Where: Center for Urban Horticulture, 3501 NE  41st St. (Near U-Village)

RSVP: 206-221-2500 with name and # attending

Questions: Contact Lauren S. Fortune, UWBG Facilities & Rental Program at 206-685-1706 or laurenf@u.washington.edu