329 posts in Washington Park Arboretum

Selected Cuttings from the Washington Park Arboretum for June 2018

Selected cuttings from the Washington Park Arboretum, June 4 - 17, 2018

1)  Kalmia latifolia                     Mountain Laurel

This attractive evergreen shrub is native to the eastern United States.
Has five-sided cup-shaped clusters of pink flowers.
The name honors Pehr Kalm (1715-1779) and latifoliia means “Broad Leafed”.

2)  Rhododendron occidentale                     Western Azalea

This deciduous shrub is native to the coasts of central and southern Oregon and California.
Fragrant, funnel-shaped flowers are borne in trusses and vary from white to pale rose, with or without a yellow blotch and sometimes streaked with darker rose markings. 

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June 2018 Plant Profile: finding the story of our George Washington Elm

The Washington Park Arboretum has two large Ulmus americana in the collection: one of which, the “George Washington” elm, is a historic American tree.

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Selected Cuttings from the Washington Park Arboretum

Selected cuttings from the Washington Park Arboretum, May 21, 2018 - June 3, 2018

1)  Enkianthus campanulatus                    Redvein Enkianthus

This attractive deciduous shrub is native to open woodlands in Japan.
Tiny bell-shaped, creamy-yellow to reddish flowers held together in clusters.
Small elliptic leaves turning bright red, orange and yellow in the fall.

2)  Davidia involucrata                     Handkerchief Tree

This deciduous tree is native to woodlands in central China.
Its small, reddish purple flower heads are surrounded by a pair of large, white bracts up to 30 cm. 

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May 2018 Plant Profile: Rhododendron ‘Ken Janeck’

Rhododendron 'Ken Janeck'

With blushing pink flower trusses and leaves with a layer of attractive fuzz underneath, Rhododendron ‘Ken Janeck’ is a sensational shrub for Northwest gardens.

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Two New Ways to Experience the Arboretum

We are excited to introduce two new ways of experiencing the Arboretum.
For a more active person, we are offering Arboretum Running Tours. We’ll combine exercise, education, and entertainment on a fun running tour through the Arboretum, one of Seattle’s Olmsted Parks and home to the University of Washington Botanic Gardens’ world-class plant collections. You’ll learn about the history and design of the park, a few choice plants, and traditional or modern uses of various plants along the route. 

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Selected cuttings make their appearance in late March at the Washington Park Arboretum

Selected cuttings from the Washington Park Arboretum, March 19, 2018 - April 1, 2018

1)  Berberis darwinii                     Darwin’s Barberry

This barberry was discovered in Chile by Charles Darwin in 1835 during his voyage on the Beagle.
Located in the Chilean entry garden of the Pacific Connections Garden, the red-tinted flower buds open to bright yellow-orange flowers.
The abundant summer fruit of this barberry is sweet and delicious as opposed to our native sour barberries (mahonias). 

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Flowering Cherries Need Help to Stay Healthy

The UW Botanic Gardens staff use integrated pest management to keep flowering cherry trees healthy and beautiful.

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First to Flower in March

Selected cuttings from the Washington Park Arboretum, Marcy 5 - 18, 2018

1)  Forsythia ovata     Korean Forsythia

This genus is named in honor of Scottish botanist William Forsyth. Forsyth was a founding member of the Royal Horticulture Society in England.
A short and spreading deciduous shrub that is popular in gardens and yards for its early spring display of bright yellow flowers.
These are planted throughout the park, but can be enjoyed walking down Azalea Way. 

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Requiem for Two Oaks and a Southern Beech

Selected cuttings from three significant tree collections in the Washington Park Arboretum, February 19, 2018 - March 5, 2018

“So if you’re travelin’ in the north country fair
Where the winds hit heavy on the borderline
Remember me to one who lives there
She once was a true love of mine.”
– Bob Dylan
Three significant tree collections succumbed to frigid north winds this past weekend.  These cuttings pay homage to their past lives.
1)   Nothofagus pumilio                Lenga Beech in Mapuche language      (Grid 49-2E)

This Chilean deciduous tree from the Andes (accession 637-70*A) was received as a whole plant from Edinburgh Royal Botanic Garden in 1970. 

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Colorful Willows and Dogwoods for Winter

Selected cuttings from the Washington Park Arboretum, February 5 - 18, 2018

1)  Salix  ‘Swizzlestick’                   Corkscrew Willow

Thrives in wet locations and is salt tolerant.
Orange-yellow young twigs that have a corkscrew growth pattern
Cut back hard in spring to promote attractive new branches.

2)  Cornus sericea  ‘Flaviramea’ Yellow Twig Dogwood

Medium to large, deciduous shrub
Bright yellow-green young twigs easily grown in medium-to-wet soils in full sun or part shade.
Species native to North America (excluding lower mid-west and deep south)

3)  Salix alba  ‘Britzensis’             Coral Bark Willow

Fast growing to 80 feet tall, but may be coppiced each spring. 

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