Hoary Azalea
Rhododendron canescens
Last reviewed: July 2026
Rhododendron canescens (Hoary Azalea) is a native deciduous shrub that blooms with fragrant pink to white flowers from March to May. This southeastern native thrives in partial sun and attracts bees, butterflies, and hummingbirds.
Hoary Azalea is toxic to dogs and cats.
Listed as toxic by the ASPCA Animal Poison Control Center (opens in new tab) (last reviewed 2026-05-21). 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.
Hoary Azalea is listed as toxic to grazing livestock (cattle, sheep, and goats) at a slight level by the USDA PLANTS Database (opens in new tab). This is a livestock indicator and is separate from pet toxicity.
Light
part sun
Water
medium
Size
36"–120" H × 36"–96" W
Bloom
Mar, Apr, May
Native to
AL, AR, CT, DE and 23 more states
Pollinators
bees, butterflies, hummingbirds
Browse plants for this ecoregion
Hoary azalea is a native deciduous shrub that produces clusters of fragrant pink or white flowers in spring before the leaves emerge. It naturally grows in woodland edges and can reach 6-10 feet tall and wide at maturity. This azalea prefers partial sun and consistent moisture, making it well-suited for naturalized areas.
Growing Hoary Azalea
Grow Hoary Azalea in part sun and medium water. Mature plants reach 36 to 120 inches tall and spread 36 to 96 inches wide. Expect moderate maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Hoary Azalea is an HOA-friendly choice. Maintenance level: moderate. Tidiness: 3 out of 5.
Works well in: foundation, mid zone.
- Can look sparse in winter without leaves
- May grow larger than expected suburban scale
Wildlife value
Host plant for azalea sphinx moth, blinded sphinx moth.
The early spring blooms provide crucial nectar for bees, butterflies, and hummingbirds when few other flowers are available. The shrub also offers nesting sites and shelter for birds.
Common questions
- When does Hoary Azalea bloom?
- Rhododendron canescens typically blooms from March through May, producing clusters of fragrant pink to white flowers before or as the leaves emerge.
- What pollinators visit Hoary Azalea?
- Hoary Azalea attracts various pollinators including native bees, butterflies, and hummingbirds who are drawn to its tubular, fragrant flowers.
- Where is Rhododendron canescens native?
- Hoary Azalea is native to the southeastern United States, including South Carolina and other states throughout the region's coastal plains and piedmont areas.
- Is Hoary Azalea toxic to dogs?
- Yes. Hoary 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 Hoary Azalea toxic to cats?
- Yes. Hoary 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.
- Is Hoary Azalea toxic to livestock?
- Hoary Azalea is listed as toxic to grazing livestock such as cattle, sheep, and goats (slight severity) by the USDA PLANTS Database. This is separate from pet (dog and cat) toxicity.
- Is Hoary Azalea HOA-friendly?
- Hoary Azalea is generally an HOA-friendly choice in the right placement, with moderate maintenance.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Pollinator Patch flags toxic plants like Hoary Azalea and shows pet-safe natives for your ecoregion instead.
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