Xera Plants is a small wholesale nursery in Sherwood, Oregon with a great website that focuses on xeriscape-appropriate plants.
Great Plant Picks is an educational program of the Elisabeth C. Miller Botanical Garden in Seattle, with recommendations for a comprehensive palette of outstanding plants for Pacific Northwest.
Ravenna Gardens University Village store in Seattle offers unique products for the garden and home and an abundance of products to inspire you to personalize your outdoor space, and to creatively bring the outdoors inside.
www.depts.washington.edu/uwbg/visit/cuh.php
The Center for Urban Horticulture is part of the University of Washington Botanic Gardens and includes a 16-acre landscaped site with buildings and gardens, a 74-acre natural area, an outdoor laboratory for UW research and the Elisabeth C. Miller Botanical Library.
The EMSWCD provides programs and services to urban and rural residents and businesses in the Portland Oregon area such as free naturescaping and rain garden workshops, an annual native plant sale, and an annual water festival.