How much sun does Western azalea need?

Western azalea grows best in part shade conditions.

When does Western azalea bloom?

Western azalea blooms in May, June, and July.

Where is Western azalea native?

Western azalea (Rhododendron occidentale) is native to CA, OR, per vouchered herbarium specimen records and regional native plant society lists.

Is Western azalea toxic to dogs?

Yes. Western azalea is listed as toxic to dogs by the ASPCA Animal Poison Control Center (aspca.org). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.

Is Western azalea toxic to cats?

Yes. Western azalea is listed as toxic to cats by the ASPCA Animal Poison Control Center (aspca.org). If your cat has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.

What pollinators does Western azalea attract?

Western azalea draws bees, hummingbirds, and butterflies.

Western azalea

Name: Pollinator Patch
Author: Pollinator Patch

Rhododendron occidentale

Last reviewed: September 2026

Western azalea is toxic to dogs and cats.

Listed as toxic by the ASPCA Animal Poison Control Center (opens in new tab) (last reviewed 2026-08-15). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435and your veterinarian's emergency line.

Pollinator Patch flags toxic plants so you can choose a pet-safe native alternative for your yard.

Light

part shade

Water

medium

Size

36"–120" H × 36"–96" W

Bloom

May, Jun, Jul

Native to

CA, OR

Pollinators

bees, hummingbirds, butterflies

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Browse plants for this ecoregion

Coast Range Northwestern Forested Mountains Sierra Nevada Central California Foothills and Coastal Mountains Central California Valley Southern California Mountains Southern California/Northern Baja Coast

A deciduous azalea with clean upright growth and large, fragrant white to pale pink flowers with a yellow blotch, blooming in showy clusters. Grows along streambanks and moist woodland edges and holds a tidy, rounded form.

Wildlife value

Highly fragrant flowers draw bees, hummingbirds, and butterflies, making it one of the more pollinator-attractive native shrubs.

Common questions

How much sun does Western azalea need?: Western azalea grows best in part shade conditions.
When does Western azalea bloom?: Western azalea blooms in May, June, and July.
Where is Western azalea native?: Western azalea (Rhododendron occidentale) is native to CA, OR, per vouchered herbarium specimen records and regional native plant society lists.
Is Western azalea toxic to dogs?: Yes. Western azalea is listed as toxic to dogs by the ASPCA Animal Poison Control Center (aspca.org). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
Is Western azalea toxic to cats?: Yes. Western azalea is listed as toxic to cats by the ASPCA Animal Poison Control Center (aspca.org). If your cat has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
What pollinators does Western azalea attract?: Western azalea draws bees, hummingbirds, and butterflies.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

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