Western Azalea
Rhododendron occidentale
Ericaceae · broadleaf deciduous shrub · native
Last updated
A deciduous azalea native west of the Rocky Mountains, reaching 10 feet. Flowers are white, orange-pink, or red in bud, opening to white or salmon pink, usually with stripes and a faint yellow blotch, fragrant. The only azalea species native to the western United States.
Fragrant flowers and native status make this an ecologically significant species for Pacific Coast gardens and restoration plantings. An important parent in western deciduous azalea breeding. Acidic, well-drained soil. Twenty-one diseases and 15 pests documented at the genus level. All parts contain grayanotoxins and are toxic if ingested.
Quick Facts
Root Colonization (Spring–Fall)
Infection at Bud Break
Apothecia Formation & Spore Release
Aecial Stage (Alternate Host)
+ 13 more — see full disease and pest lists below