828 posts in News

August 2020 Plant Profile: Quercus pontica

green leaves

Consider growing this handsome oak in your Northwest garden.

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Jul 9, 2020 / Washington Park Arboretum, Horticulture, News / UWBG Horticulturist, Joanna Long

Australian Inspiration at the Washington Park Arboretum

Photo of Ozothamnus rosmarinifolius 'Silver Jubilee'

1)  Ozothamnus rosmarinifolius    ‘Silver Jubilee’

The silvery foliage serves as a lovely backdrop for the dense clusters of white flowers in spring.
This shrub can grow to about four feet tall and wide and is a member of the Asteraceae family.
You can find Ozothamnus rosmarinifolius ‘Silver Jubilee’ blooming in the Australian portion of the Pacific Connections Garden.

 
 
 
 
 
 
2)   Callistemon pityoides  (Mt. 

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Jun 11, 2020 / Center for Urban Horticulture, Horticulture, News / UWBG Horticulturist, David Zuckerman

Selected Cuttings from the Center for Urban Horticulture

Close-up of Buddleja longiflora (Butterfly Bush)

1)   Buddleja longiflora

This rare evergreen butterfly bush is native to the Serra do Caparao mountains in Brazil.
What makes this Buddleja species unique from other species and cultivars is its stunning, long tubular orange flowers that are paired in three-to-five flowered cymes.
Its flowers, plus striking white tomentose leaves and small stature (four feet), make this a worthy plant to introduce into the nursery trade. 

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Jun 2, 2020 / Plant Profiles, News / David Zuckerman

June 2020 Plant Profile: Tilia americana var. heterophylla

americana var. heterophylla looking up trunk into the crown

I chose to profile the white basswood tree because it’s a North American Linden of impressive size in our collection. Its common name, basswood, is derived from the tough fibrous inner bark called “bast” that is used to make ropes, baskets, mats and many other lightweight wood products. The “white” refers to the undersides of the leaves that are covered with a white indumentum of stellate hairs. 

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May 19, 2020 / UWBG At Home, Washington Park Arboretum, Horticulture, News / UWBG Horticulturist, David Zuckerman

Selected Cuttings from the Home of UW Botanic Gardens Horticulture Manager, David Zuckerman

Photo of Orange Ball Buddleja

1)  Buddleja globosa                        Orange Ball Buddleja

This Chilean large and lanky quasi-evergreen shrub comes true to name when in flower.
It is now festooned with 8-10 fragrant orange ball-shaped flowers arranged in terminal panicles.
Hummingbirds are fun to watch while hovering and feeding over each “ball” for several seconds.
You can view several blooming now in our Pacific Connections Chilean Gateway Garden. 

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May 13, 2020 / Farm, Plant Profiles, News / Perry Acworth, UW Farm Manager

May 2020 Plant Profile (extra): Asparagus officinalis

asparagus spears emerging from the earch

The UW Farm planted more asparagus plants as an act of hope for Earth Day and for those challenged by COVID19, because we will not harvest until 2022. The UW Farm highly recommends planting asparagus in your garden, due to the ease of growing and harvest and nutritional benefits.

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May 8, 2020 / News / Roy Farrow

Wisteria Standards

close up of wisteria

Horticulture supervisor Roy Farrow reveals the secrets to pruning wisteria for a floristic display that doesn’t engulf the house.

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May 6, 2020 / Plant Profiles, News / David Zuckerman

May 2020 Plant Profile: Quercus robur ‘Concordia’

Azalea Way with large golden oak on right side

No other tree in the Arboretum is as beloved as our Golden oak, Azalea Way’s sentinel and harbinger of Spring.

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May 6, 2020 / UWBG At Home, News / Tracy Mehlin, Librarian

UWBG at Home: Plant volunteers: panacea or pain in the neck?

patch of blue little flowers

Flowers that grow without help from the gardener can be charming, but also may try to take over the garden.

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May 5, 2020 / UWBG At Home, Center for Urban Horticulture, Horticulture, News / UWBG Horticulturist, Annie Bilotta

Selected Cuttings from the Home of Annie Bilotta, Horticulturist at the Center for Urban Horticulture

Photo of Tall Oregon Grape

Pacific Northwest Natives
1)   Berberis aquifolium, formerly known as Mahonia aquifolium                                                                                                                                                                       Tall Oregon Grape

Native to the Pacific Northwest from British Columbia to northern California.
Its yellow flowers in April smell like honey and attract hummingbirds and insect pollinators.
Blue-black berries are edible and are used to make jam and juice. Pacific Northwest aboriginal peoples used the bark and roots to make a yellow dye. 

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