Ericaceae
smooth azalea
Rhododendron arborescens
Other Common Names
sweet azalea
Plant Type
Shrub (less than 10 ft)
Life Cycle
Perennial
Typical Size
2-12 ft. tall
8-12 ft. wide
Tolerant of
Occasional Flooding
Inolerant of
Dry Soil
Propagation
By seed
Plant Propagation Notes
No pretreatment necessary. Seeds can be sown in a 2:1 perlite/peat mixture at 45-50 degrees.
Plant Planting Notes
Provide up to 12 ft spacing.
Plants/Diseases
May become infested with several insect or pathogen pests. Full sun can scorch the leaves without adequate moisture.
Wildlife Benefits
Nectar/pollen source for pollinating insects, Host plant for butterfly larvae
Leaves
Leaves alternate, elliptical with entire margins.
Flowers
White, sometimes pink or yellow, fragrant and tube-shaped on a raceme.
Toxicity
Toxic if ingested.

USDA Hardiness Zones
4, 5, 6, 7
Light Exposure
Full Sun, Part Sun/Shade
Soil Moisture
Moist
Soil Drainage
Well-drained
Soil pH
Acidic (less than 6.0)
Native in South Carolina?
Yes
Plant Native Habitat
Forested river and stream banks and swamps or boggy areas.
Global Conservation Status (NatureServe)
Apparently Secure (G4)
Federal Conservation Status (USFWS)
Not Listed
Distribution Notes
Rare in the coastal plain, sandhills, and piedmont. Common in the mountains.