Rhododendron arborescens

Common Names

Sweet Azalea, Azalea Arborescens

Summary

Rhododendron arborescens, Sweet Azalea, is a deciduous shrub native to the eastern United States, typically found in moist woodland habitats such as stream banks and swampy sites, it grows 8 to 12 ft tall and wide, with glossy bright green leaves that turn red to purple in fall, and bears strongly fragrant funnel-shaped flowers that are white or pink-tinged with protruding red stamens in late spring to early summer, arranged in small clusters, for cultivation it prefers partial shade or dappled sunlight with protection from wind and hot afternoon sun, in moist, well-drained acidic soil enriched with organic matter; keep roots moist with mulch and avoid calcareous fertilizers, regular watering during dry periods, pruning after flowering to preserve next year's buds, and propagation by air layering or stem cuttings rooted in peat moss and sand are recommended, it can be used as a hedge or specimen in borders, open woodland, native plant gardens, or near patios, and it attracts bees, butterflies, and hummingbirds; all parts are poisonous if ingested

Lifecycle

Perennial

Height

8-20 feet

Spread

8-20 feet

Hardiness Zones

Zones 5-8

Sunlight Requirements

Ideally partial shade. Tolerates some sun; morning sun with afternoon shade is ideal.

Soil Type

Acidic, well-drained, moist soil rich in organic matter, typically loam or sandy loam, with a pH around 4.5–6.0

Soil Drainage

Well-drained, consistently moist but not waterlogged soil.

Soil pH

4.5-5.5

Bloom Color

White to pink

Bloom Time

Spring and Summer

Foliage Color

Glossy green foliage that can turn deep red to purple in fall

Fall Foliage Color

Red to Purple

Leaf Lifecycle

Deciduous

Growth Rate

Fast

Seasons of Interest

Spring, Summer, and Fall

Propagation Methods

Seeds, Cuttings, Layering

Attracts Wildlife

Attracts bees and butterflies