Rhododendron viscosum

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Swamp Azalea


Plant Specifics

Size:5-15 ft tall by to 12 ft wide
Life Span:Long-lived perennial
Flower Color:White,pink
Fruit Color:NA
Noted for:Aroma, fragrance, Showy flowers


Recommended Uses:Specimen plant for moist shady areas. Shady rain gardens.
Propagation:Root cuttings, layering, seed.
Availability:Native nurseries, Seed
Light: Part Shade,  Shade
Moisture Tolerance:
always floodedextremely dry
 (Stays Wet ----- to ----- Somewhat moist, no flooding)
Moisture Tolerance: Stays Wet ----- to ----- Somewhat moist, no flooding
Salt Water Flooding Tolerance:Not salt tolerant of inundation by salty or brackish water.
Salt Spray/ Salty Soil Tolerance:Low/no tolerance of salty wind or direct salt spray
Soil or other substrate:Organic material (muck), Sand
Soil pH:Highly acidic to acidic



Attracts  hummingbirds.


  • Attracts pollinators especially bumble bees.
  • Attracts butterflies.

Native Habitats:Moist-wet sites. Seep swamps, pineland-wetland ecotones, edges of bay swamps, moist woods.

Distribution and Planting Zones

Natural Range in Florida
USDA Zones

Suitable to grow in:
8A 8B 9A 9B 

USDA zones are based on minimum winter temperatures


Ethnobotany:Poisonous if eaten.
General Comments:The most aromatic of the azaleas. That last of the azaleas to bloom--in Florida May to June. Flowers are sticky--hence the name R. viscosum.