Species PlantsFlame Azalea

Flame Azalea

Rhododendron calendulaceum

UncommonPlant
Illustration of Flame Azalea (Rhododendron calendulaceum)

Flame Azalea is widely considered the most spectacular of all native North American azaleas, producing brilliant flowers ranging from yellow to deep orange-red in late spring that William Bartram described as 'the most gay and brilliant flowering shrub yet known.' It is a deciduous shrub of the Appalachian highlands, typically blooming around or just after leaf-out. Unlike most rhododendrons, azaleas have sticky-glandular flower tubes and longer, exserted stamens. It is a parent of many cultivated azalea hybrids and is particularly abundant in the Great Smoky Mountains.

Habitat
Dry to moist mountain slopes, forest openings, and heath balds in the southern Appalachians from Pennsylvania to Georgia.
Diet
Flowers with long tubes adapted for Ruby-throated Hummingbirds and large bumble bees; browsed by deer when young.
How common
Uncommon

Best time to see a Flame Azalea

The best time to see a Flame Azalea is May–June, when about 77% of U.S. sightings happen, based on 4,745 research-grade iNaturalist observations.

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