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Sweet Azalea

Rhododendron arborescens

Sweet Azalea, also called Smooth Azalea, brings fragrance and refinement to woodland gardens with clusters of white to pale pink flowers that release a rich, clove-like perfume. Long, rosy-red stamens sweep beyond each blossom, creating a dramatic contrast against the pale petals. The flowers arrive from late spring into early summer, when the glossy green leaves have already emerged, and provide nectar for bees, butterflies, hummingbirds, and other pollinators.

Chiefly native to the Appalachian region, this upright, deciduous shrub naturally inhabits streambanks, moist woodlands, and other cool, sheltered sites. It thrives in dappled light and acidic, consistently moist soil, provided excess water can drain freely. Sweet Azalea can eventually become a large, loosely branched shrub, making it a beautiful choice for woodland edges, mixed borders, rain gardens, or anywhere its memorable fragrance can be enjoyed up close.

Details

Height96” - 144”
Spread120"
Bloom SeasonMay – July
Soil Types
loamLoam
sandSand
Soil Moisture
mediumMedium
moistMoist
Sun Exposure
partSunPart Sun

Range Map

Native
No current
record

Ecological Benefits

Maintenance Tips

  • Keep the soil consistently moist, particularly during establishment and periods of drought, but avoid sites where water remains stagnant.
  • Apply a layer of organic mulch to conserve moisture and protect its shallow roots, keeping the mulch away from the base of the stems.
  • Avoid digging or cultivating beneath the shrub, as its fine, shallow root system is easily disturbed.
  • Prune only when necessary and immediately after flowering, before the plant forms the following year’s flower buds.

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