Clammy Azalea
Rhododendron viscosum
Last reviewed: June 2026
Clammy Azalea is toxic to dogs and cats.
Listed as toxic by the ASPCA Animal Poison Control Center (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.
Light
part shade
Water
high
Size
36"–120" H × 36"–96" W
Bloom
Jun, Jul
Native to
AL, AR, CT, DE and 19 more states
Pollinators
bees, butterflies, hummingbirds
Clammy azalea is a native deciduous shrub that produces clusters of fragrant white or pink tubular flowers in early summer. This moisture-loving plant thrives in partially shaded areas and can reach 3-10 feet tall and wide at maturity. It prefers consistently moist soil and provides excellent seasonal interest with its showy blooms.
In an HOA neighborhood
Clammy Azalea is an HOA-friendly choice. Maintenance level: moderate. Tidiness: 4 out of 5.
Works well in: front yard, foundation, mid zone.
- Requires consistent moisture to maintain appearance
- Can become leggy without proper pruning
Wildlife value
Host plant for Azalea sphinx moth.
The fragrant flowers attract bees, butterflies, and hummingbirds during the June-July bloom period. This native azalea serves as an important nectar source for pollinators during the summer months.
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 Clammy Azalea and shows pet-safe natives for your ecoregion instead.