Species PlantsSwamp Azalea

Swamp Azalea

Rhododendron viscosum

CommonPlant
Illustration of Swamp Azalea (Rhododendron viscosum)

Swamp Azalea is a late-blooming native azalea of wetland habitats, flowering in June and July after most other native azaleas have finished — filling swamps and bog edges with intensely sweet-spicy fragrance that carries for considerable distances on warm summer evenings. The flowers are white to pale pink with a long, sticky, glandular tube that traps short-tongued insects, ensuring that only long-tongued pollinators like hummingbirds and swallowtail butterflies successfully retrieve nectar. It is highly tolerant of wet, flooded soils and is diagnostic of acidic wetlands.

Habitat
Swamps, bogs, stream banks, and wet pine barrens across the eastern United States from Maine to Alabama.
Diet
Strongly fragrant flowers attract Tiger Swallowtails, Sphinx Moths, and Ruby-throated Hummingbirds as primary pollinators.
How common
Common

Best time to see a Swamp Azalea

The best time to see a Swamp Azalea is June–July, when about 67% of U.S. sightings happen, based on 2,602 research-grade iNaturalist observations.

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