Japanese Garden Hosts Groundbreaking Ceremony for Ishigaki Wall Project
Guests at the groundbreaking ceremony for the Ishigaki Wall project. (Photo by Holly Cuaresma) BY RUMI TSUCHIHASHI On June 15, 2026, the Seattle...
News Articles
Arboretum Earth Day Event Promotes “Powerful Pollinators”
We had a great turn out for our Earth Day at the Arboretum event on Saturday, April 19. More than 100 volunteers worked with the hort crew on six...
Volunteers Help Restore the Arboretum on a Special Earth Day
Volunteers working in the Holly Collection area during Earth Day 2024. More than 150 volunteers attended our annual Earth Day at the Arboretum...
New Plantings in the Arboretum: 2023 in Review
Rhododendron pubescens in bloom in lower Rhododendron Glen. (Photo by Niall Dunne) In the latest issue of the Arboretum Bulletin, UW Botanic Gardens...
Landscape Architecture Students Renovate a Water Channel in the Arboretum
AFTER: The Woodland Garden drainage pipe and water channel following the renovation. In early March 2023, students from the University of Washington...
News Articles
Black Walnut Tree in Arboretum Tests Positive for Thousand Cankers Disease
Cankers and beetle feeding holes on the inner bark of a downed walnut branch. (Photo courtesy: Elizabeth Bush, Virginia Polytechnic Institute and State University, bugwood.org)FIRST DOCUMENTED CASE IN WESTERN WASHINGTON! This summer, Seattle Botanic Gardens...
Hidden Treasure of the Arboretum: Witch-Alder
Fall foliage close-up of a witch-alder in the Arboretum's Woodland Garden. (Photo by Niall Dunne)BY PHIL WOOD As a retired garden designer, I am always on the lookout for plants that offer mul-tiple seasons of interest. Witch-alders (Fothergilla species and hybrids)...
Volunteers Help Host First Seattle Botanic Gardens’ Plant Sale
Volunteers helping shoppers at check-out in the Big Greenhouse. (Photo by Polly Teeter)BY ALICIA HAMILTON Our annual Fall Plant Sale took place at the Graham Visitors Center in the Arboretum last Saturday, September 19. Though it happened on a single day, the sale was...
Bulletin Stories
Hidden Treasure of the Arboretum: Witch-Alder
Fall foliage close-up of a witch-alder in the Arboretum's Woodland Garden. (Photo by Niall Dunne)BY PHIL WOOD As a retired garden designer, I am always on the lookout for plants that offer mul-tiple seasons of interest. Witch-alders (Fothergilla species and hybrids)...
Symbiotic Marvels: Get to Know the Small but Mighty Lichens of the Arboretum
Figure 1: Lichens on the Ceanothus in the Graham Visitors Center parking lot, including Ramalina farinacea, Usnea species (fruticose), Evernia prunastri and Physcia tenella (foliose).TEXT BY KATHERINE GLEW | Photos by Richard Droker Hidden beneath the leaves and...
Conservation Corner: Large-Winged Wingnut
The winged fruits of Pterocarya macroptera maturing in summer. (Photo by Niall Dunne)BY CHRISTINA PFEIFFER Quietly tucked away in the Arboretum’s old field nursery, on the south side of Crabapple Meadow, a stately specimen of Pterocarya macroptera holds court amid a...
Bulletin Archive
Looking for past Bulletins? Check out our Bulletin Archive for past issues.