March 2014 Plant Profile: Stewartia sinensis

March 10th, 2014 by Soest Gardener, Riz Reyes
Photo by Mitch Evans

Photo by Mitch Evans

It may seem odd that we’re profiling a plant we currently don’t have yet at UWBG, but soon everyone will be able to see it in a very prominent spot at the Center for Urban Horticulture. After over 10 years in its place, the 2nd of two Parrotia persica (Persian Ironwood) in the Soest Garden will be removed to make room for a new tree that will take its place for the next 10 year cycle to cast part shade in Bed 2. Curation has selected the exquisite and rare Stewartia sinensis.

Many keen gardeners and horticulturists are familiar with the more common Stewartia pseudocamellia and the stunning bark of S. monodelpha. This Chinese stewartia seems to have been overlooked in the trade as descriptions state that the flowers are a hair smaller than that of S. pseudocamellia and monodelpha and the fact that it may be less hardy than the two species may also have contributed to its status as a collector’s item destined mainly for taxonomic collections.  It has the same exquisite white blooms with the yellow stamens and the trunk of this small tree is truly exceptional with pretty peeling bark and a magnificent marbling pattern as the plant ages.

Be on the lookout for this stunning species. It will be years until it casts the kind of shade the underplantings of herbaceous perennials prefer, but the eventual effect will be quite dramatic.

 

 

 

 

Common Name:  Chinese Stewartia
Location: Soest Garden Bed 2
Origin: Central China
Height and Spread: 20-25′ high x 15-20′ wide
Bloom/Fruit Time: June-July

 

 

 

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RECENT WPA TREE REMOVAL NOTIFICATIONS

October 12th, 2012 by UWBG Horticulturist

This notice is to inform you that the following arboretum trees/UWBG plant collections are scheduled to be removed first half of October. All removals, including public safety and posting details, will be conducted in-house by the UWBG tree crew. 

  • Hazardous mature Fraxinus latifolia, Oregon ash, leaning over Interlaken Blvd in the Holly display
  • Standing dead UWBG plant collection #497-48-C, Cupressus arizonica var nevadensis, Arizona cypress, south Arboretum Dr, across from Pacific Connections – Siskiyou Slope
  • Standing dead UWBG plant collection # X-372-D, Chamaecyparis lawsoniana form, Port Orford, in the Pinetum. Cause: Phytophthora lateralis, systemic soil-borne disease
  • Standing dead UWBG plant collection, Chamaecyparis lawsoniana, Port Orford, in grove across from Graham Visitor Center. Cause: Phytophthora lateralis, systemic soil-borne disease 
  • Standing dead western hemlock, Tsuga heterophylla, located in Woodland Garden

Further questions or comments? Please contact David Zuckerman @ dzman@uw.edu or call 543-8008.

 

 

 

 

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WPA Tree Removal Notice

June 26th, 2012 by UWBG Horticulturist

Several standing dead UWBG tree collections are scheduled for removal beginning this week. Removals, public safety and postings, all handled via UWBG tree crew.

The list includes:

  • 225-89-B Cupressus guadalupensis – Pinetum 34-4W
  • 1550-45  Oxydendrum arborea – Rh. Glen 12-7E
  • 52-10  Araucaria araucana – PC Ch. Gateway 1S-4E
  • 164-49-A Acer tegmentosum – Asiatic Maples 27-B
  • 37-02-A Clerodendrum trichotomum – GVC 42-4E
  • 418-55-A Sorbus japonica – Sorbus 20-4E

Thank you,

David Zuckerman

Manager of Horticulture and Plant Records

UW Botanic Gardens

VM 206.543.8008

FX   206.616.2971

dzman@uw.edu

 

 

 

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Cherry Tree Removal at CUH

March 14th, 2012 by Soest Gardener, Riz Reyes

Our row of cherry trees along the driveway at CUH are scheduled to be removed this Thursday, March 15.

Though they’re starting to bloom, we have a severe infestations of blossom brown rot, a common fungal disease of cherries in the Pacific Northwest.

Fungicdal treatments are not a sustainable option. Our decision to display healthy plants available in the trade has left us with the option to choose plants that will be more adaptable to this site.

For more information, check out a post composed by Horticulture Supervisor, David Zuckerman, on the early flowering cherries along Azalea Way in Washington Park Arboretum.

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Notice of Garden Renovation: Soest Garden Specimen Tree

October 4th, 2011 by Soest Gardener, Riz Reyes

Our Persian Ironwood tree slated to be replaced later this fall/winter

So after 13 years in the same raised bed, it’s time that one of our Persian Ironwood trees (Parrotia persica) be removed and replaced with another species.

It was suggested that every ten years or so, the specimen tree would be changed out to showcase different species that could be utilized to create the part shade environment intended for the perennials planted below. There’s also concern that a mature tree’s roots could damage the concrete wall if allowed to get large.

After leaf-drop this fall/winter, we will close off the Soest Garden for a day or so and have the tree removed. Some of the soil will be replace (and perennials moved temporarily, of course) and our new tree, a American smoke tree Continus obovatus, will be planted.

We will begin digging up perennials shortly and keeping them in the nursery until they can be replanted in the same bed. Signs will be posted describing the project and further notice will be made when the date of renovation is determined.

CUH Grounds Staff

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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.

Questions?

206-543-8008

David Zuckerman

Horticulture Supervisor

UW Botanic Gardens

VM 206.543.8008

FX   206.616.2971

dzman@uw.edu

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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

Questions?

206-543-8008

David Zuckerman

Horticulture Supervisor

UW Botanic Gardens

VM 206.543.8008

FX   206.616.2971

dzman@uw.edu

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Tree Removal Notice

August 10th, 2010 by UWBG Horticulturist

WPA TREE REMOVAL NOTIFICATION UPDATE:

PINE REMOVAL SCHEDULED FOR YESTERDAY, 8/19/10,  HAS BEEN POSTPONED UNTIL SEPT. 2nd, THUR., DUE TO EQUIPMENT NEED: BUCKET TRUCK.

UWBG tree crew has scheduled the removal of a large standing dead pine collection for Wed. 8/18 and/or Thur. 8/19. Vitals below:

Pinus sylvestris

UW Accession: X-72

Grid 4S-8E

DBH 11.8

Location: Madison Strip

Notes: Standing dead, in decline for several years, oozing pitch near base, possibly caused by boring insects

Wood will be hauled and stump ground ASAP to minimize attracting pine pests.

Targets include:  Street – Washington Place. Trail – S. entry pedestrian path. Other – Plant collections

Temporary road and trail closures and/or detours will be well marked at the site and removal posted at the Graham Visitors center and UWBG website.  Thank you for your cooperation.

If you have any questions, pls contact me via e-mail or phone number below.

David Zuckerman

Horticulturist

UW Botanic Gardens

VM 206.543.8008

FX   206.616.2971

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Tree Removal Notice

August 3rd, 2010 by UWBG Horticulturist

ARBORETUM TREE REMOVAL NOTICE –

UWBG tree crew has scheduled the removal of a large standing dead pine collection for Wed. 8/4.  Details below:

Pinus strobus 977-97-E

Grid 35-4W

26″ DBH

Tree has been in decline for several years, possibly due to drainage problems and/or root rot.

Wood will be hauled and stump ground ASAP to minimize attracting pine pests.

Targets include Pinetum Loop trail and other and other plant collections.

Temporary road and trail closures and/or detours will be well marked at the site and removal posted at the Graham Visitors center. Thank you for your cooperation.

If you have any questions, please contact me via e-mail or phone number below.

David Zuckerman, UWBG Horticulture Supervisor,  206-543-8008

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