Header photo: River otter in the Arboretum wetlands (courtesy Larry Hubbell).
Our full-color horticultural and botanical magazine
Published since 1937, the Washington Park Arboretum Bulletin is a quarterly botanical and horticultural magazine. A benefit of Arboretum Foundation membership, it includes in-depth articles on the Arboretum collections and history, as well as general information of interest to botanists, gardeners, and plant lovers in the Pacific Northwest and beyond.
You can also purchase the Bulletin at the Arboretum Gift Shop for $5 per copy.
Page 2 Spring Endeavors—Jane Stonecipher
Page 3 Hardy Rubber Tree—Walt Bubelis
Page 5 HIDDEN TREASURE OF THE ARBORETUM: Climbing Hydrangea—Niall Dunne
Page 8 How Vines Attach to a Support System—Pat Roome
Page 9 Snakebark Maples in the Arboretum—Phil Wood
Page 14: Japanese Cleyera: Shintō’s Sacred Flowering Evergreen—Corinne Kennedy
Page 18: Gauging Resistance: My Azalea Lace Bug Research in the Arboretum—Ryan R. Garrison
Page 5 PLANT ANSWER LINE: Plants That Look and Taste Like Spinach—Rebecca Alexander
Page 26 IN A GARDEN LIBRARY: New Books for Northwest Gardeners—Brian R. Thompson
Thanks to Our Sponsors!
The spring 2022 issue of the Bulletin was made possible by:
For information on advertising/sponsorship opportunities—or to submit an article idea—please email the editor, Niall Dunne, or call him at 206-325-4510.
May 12, 2022
A total of 116 volunteers participated in our annual Earth Day at the Arboretum work-service event on April 23. They removed more than 50 cubic yards of ivy, blackberry, and other invasive weeds from plant collection beds and natural areas—covering a combined area of...
Apr 19, 2022
Since 2015, the invasive azalea lace bug (Stephanitis pyrioides) has been causing serious damage to azaleas and rhododendrons in our state, including in the Arboretum. A tiny aphid relative, the lace bug removes chlorophyll from Rhododendron foliage, weakening the...
Mar 18, 2022
Beautiful willows, such as the Salix gracilistyla 'Melanostachys' pictured here, are blooming in the Arboretum's Witt Winter Garden and beyond. In the latest issue of the Arboretum Bulletin, writer and estate gardener Daniel Mount discusses the wild and weedy willows...