There are many different varieties of azaleas--all of which are part of the rhododendron genus--sold in nurseries around the Pacific Northwest. This includes Azalea 'Arneson Gem' (Rhododendron ...

New Zealand and the U.S. Pacific Northwest); Rhododendron Glen, one of the arboretum's oldest sections, dating to the late 1930s; and a traditional Japanese garden. It also has a winter garden ...