Rhododendron atlanticum (Coastal Azalea)

A genuinely tough colony-former with New Jersey at the very northern edge of its native range, coastal azalea's potent musky fragrance has made it a foundational breeding parent for sweet-smelling deciduous azalea cultivars - while a documented specialist bee relies on the genus specifically.

Species Overview

Rhododendron atlanticum, commonly called coastal azalea or dwarf azalea, is a compact, loosely-branched, stoloniferous deciduous shrub native to coastal plain areas from New Jersey south to Georgia. It typically matures to 2 to 3 feet tall, producing intensely fragrant, funnel-shaped white flowers often flushed with pink in clusters of 3 to 13 in April, at or slightly before new leaves emerge.

Application

• Fragrant woodland and pollinator garden plantings - potent musky fragrance
• Sandy soil colonizing plantings - spreads by underground stolons
• Specialist bee habitat (Andrena cornelli) alongside butterflies and hummingbirds
• Azalea breeding stock - prized parent for fragrant cultivars

Growing Conditions / Specification Data

• Light: Part Shade - morning sun with afternoon filtered shade preferred
• Soil/Moisture Tolerance: Well-drained, sandy, acidic soil kept consistently moist
• Plant Type: Shrub
• Mature Height: 2-4 ft.
• Fall Color: Insignificant/None
• Bloom Color / Period: White, Pink; April-May
• Wetland Indicator Status: NI (No Indicator) - see flags
• Native Range: Northeast/Mid-Atlantic (full list) - New Jersey marks the species' northern range limit
• Hydrology: Mesic-Moist
• Root Depth: Moderate (12-24 in.)
• Salinity Tolerance: Low
• Growth Rate: Moderate
• Drought Tolerance: Low
• Flood Tolerance: Moderate - A moist-woodland, suckering understory azalea tolerant of periodically wet soil.
• Shade Tolerance: Tolerant
• Growth Habit: Multi-stemmed/Thicket-forming - suckering deciduous azalea
• USDA Hardiness Zones: 5-8
• Deer Resistance: No (Frequently Damaged)
• Pollinator Value: Supports bees, supports specialist/oligolectic bees, supports butterflies, supports hummingbirds

Planting Guidance

• IMPORTANT: all plant parts are toxic if ingested, consistent with the broader Rhododendron genus. A genuinely tough, fire-adapted plant - resprouts vigorously after overgrazing or forest fire.