168 posts in Horticulture

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 9, 2025 / Center for Urban Horticulture, Personal Profiles, Union Bay Natural Area, Horticulture / Emma Thordsen, Adult Education Program Coordinator

Staff Profile: Kristen Johnson

This month we head over to the Center for Urban Horticulture (CUH) to meet horticulturist Kristen Johnson!

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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 19, 2025 / Personal Profiles, Horticulture, News / Mary-Margaret Greene

Staff Profile: Kevin Rusch, Horticulturist

Horticulturalist Kevin Rusch trimming Gunnera tinctoria

Meet Kevin Rusch, a horticulturalist at the University of Washington Botanic Gardens and part of the team of folks who care for the collections at the Arboretum!

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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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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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Aug 1, 2023 / Washington Park Arboretum, Center for Urban Horticulture, Plant Profiles, Horticulture / Sloane Palmer, Horticulturist, Center for Urban Horticulture

August 2023 Plant Profile: Cornelian Cherry

Scientific name: Cornus mas 
Common name: Cornelian cherry, European cornel, Cornelian cherry dogwood
Family: Cornaceae (Dogwoods)
Native range: Southern and central Europe to western Asia
Location: At the Center for Urban Horticulture, there is a grove located in the northern lawn area along the central drive and the trees’ accession numbers are 87-90. At the Arboretum, there are three specimens under the accession number of 704-38 (grid 33-B) from the original planting of the Woodland Garden in 1938. 

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Jul 31, 2023 / Washington Park Arboretum, Horticulture, News / Shea Cope, Arborist, Washington Park Arboretum

The Washington Park Arboretum: New Beginnings!

The horticulture staff at the Washington Park Arboretum are constantly planting new trees. These new plantings increase species diversity within the collection, succeed dead or declining trees, contribute to future increased canopy coverage and much, much more. All of the trees mentioned in this article were planted over the last year and are located within the Pinetum on the west side of Lake Washington Boulevard. 

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