196 posts in Plant Profiles

Aug 7, 2025 / Washington Park Arboretum, Plant Profiles, Horticulture / Joanna Long, Manager of Horticulture at the Washington Park Arboretum

August Plant Profile: Quercus graciliformis

Quercus graciliformis foliage

One of the many gems in our oak collection is Quercus graciliformis, Slender Oak or Chisos Oak, which is endemic to a very limited area in the Chisos Mountains in western Texas. Read on to learn about how the Washington Park Arboretum participates in tree conservation and research, particularly in the case of oaks, maples, magnolias, and hollies.

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Jul 7, 2025 / Washington Park Arboretum, Center for Urban Horticulture, Plant Profiles, Education / Olivia Price, Adult Education Programs Supervisor

July Plant Profile: Juncus effusus ‘Spiralis’

Scientific Name: Juncus effusus ‘Spiralis’
Common Name: Corkscrew rush
Family: Juncaceae
Native Range (of Juncus effusus): Throughout North America, South America, Europe, Africa, and Asia.
The straight species of corkscrew rush, Juncus effusus, has a plethora of common names – including common rush and soft rush – and can be found in temperate climates all over the globe. Juncus is hardy in USDA zones 1-11. 

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June Plant Profile: Ilex vomitoria

Close-up of Ilex vomitoria foliage at the Washington Park Arboretum

Ilex vomitoria may not be much to look at, but dig just a little deeper to learn its interesting story!

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May Plant Profile: Fragaria sp

The UW Farm highlights the humble strawberry this month! Managed organically, the campus farm will add a sweet, culturally significant sustainable crop to its curriculum and production.

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Mar 25, 2025 / Washington Park Arboretum, Center for Urban Horticulture, Plant Profiles, Horticulture / Raymond J. Larson, M.S., Associate Director & Curator of Living Collections and the Otis Douglas Hyde Herbarium

March Plant Profile: Lysichiton americanus

Skunk cabbage emerging in early March

Skunk cabbage is a sure harbinger of spring in the maritime Northwest.  Among the earliest native species to flower, its bright color, large size and local abundance are easy to spot and promise warmer days ahead after the long dark of winter.

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Feb 6, 2025 / Washington Park Arboretum, Plant Profiles, Horticulture, News / Roy Farrow, Washington Park Arboretum Grounds Supervisor

February Plant Profile: Sycopsis sinensis

Sycopsis sinensis flowers and foliage

If you visit the grove of Sycopsis at the Pacific Connections Garden along Arboretum Drive this February you will be in for a treat – the flowers, while not showstoppers individually, are blooming in incredible quantity this winter.

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Nov 26, 2024 / Washington Park Arboretum, Center for Urban Horticulture, Plant Profiles / Raymond J. Larson, M.S., Associate Director & Curator of Living Collections and the Otis Douglas Hyde Herbarium

November Plant Profile: Disanthus cercidifolius

Learn all about Disanthus cercidifolius, the redbud hazel – a show-stopping shrub for shady gardens that we have many examples of at the Washington Park Arboretum and the Center for Urban Horticulture.

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Oct 21, 2024 / Washington Park Arboretum, Plant Profiles / Manager of Horticulture, Washington Park Arboretum

Plant Profile: Taxus brevifolia

Scientific Name: Taxus brevifolia
Common Name: Pacific yew, western yew
Family: Taxaceae
Native Range: Western coast of the United States, from southern Alaska to northern California; western Rocky Mountains, from northern British Columbia to Idaho and Montana
Location in the Arboretum: South end of the Arboretum above Azalea Way (Grid 17-1E)
The Pacific yew, Taxus brevifolia, is a native tree or large shrub that is often overlooked below the overstory of large iconic Pacific Northwest trees such as Western redcedars, Douglas firs, and Western hemlocks. 

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Aug 1, 2024 / Washington Park Arboretum, Plant Profiles, News / Roy Farrow, Washington Park Arboretum Grounds Supervisor

August Plant Profile: Camellia sasanqua

Scientific Name: Camellia sasanqua
Common Name: sasanqua camellia; the Japanese name for all camellias is tsubaki,“tree with shining leaves,” while the Japanese name for Camellia sasanqua is sazanka, “plum-flowered tea.”
Family: Theaceae
Conservation Status: Least Concern
Native Range: Lowland forests of southern Japan
Culture/Habit: Organically rich, evenly moist, well-drained soils in shade to sun. Small trees to 16 feet tall or vining shrubs growing wider than tall, often depending on sun exposure. 

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Jul 15, 2024 / Washington Park Arboretum, Plant Profiles, Horticulture / Roy Farrow, Washington Park Arboretum Grounds Supervisor

July Plant Profile: European Beech

Scientific name: Fagus sylvatica
Common Name: Common beech, European beech
Family: Fagaceae (Oak family)
Conservation Status: Least Concern
Locations in the Washington Park Arboretum: Oak Collection area, directly east from the Graham Visitor Center
Fagus sylvatica, 3 specimens 595-44-A &B & 907-50-A: grids 42-1E, 43-1E
F.sylvatica ‘Aspleniifolia’ 1142-49-A: grid 41-1E
F.sylvatica ‘Dawyck’ 490-57-A: grid 40-1E
F.sylvatica ‘Riversii’ 682-67-A: grid 44-B
F.sylvatica ‘Rohanii’ 382-50-A: grid 42-1E
F.sylvatica ‘Spaethiana’ 654-54-A: grid 42-1E
F.sylvatica f. 

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