logo Calflora, a 501c3 non-profit
Taxon  Report  
Rhododendron occidentale  (Torr. & A. Gray) A. Gray  var. occidentale 
Western azalea
Rhododendron occidentale var. occidentale is a tree or shrub that is native to California, and found only slightly beyond California borders.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
Parent: Rhododendron occidentale
Genus: Rhododendron
Family: Ericaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Toxicity: Do not eat any part of this plant.

Wetlands: Equally likely to occur in wetlands and non wetlands

Habitat: streambanks

Communities: wetland-riparian

Name Status:
Accepted by PLANTS
Alternate Names:
PLANTSAzalea occidentalis
Information about  Rhododendron occidentale var. occidentale from other sources
Nursery availability from CNPLX
This plant is available commercially.
USDA PLANTS Profile (RHOCO)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 05/14/2025).