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Rhododendron calendulaceum | Flame Azalea

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DESCRIPTION
Rhododendron calendulaceum is a deciduous shrub admired for its dramatic spring display and open, upright form. In late spring to early summer, large clusters of trumpet-shaped flowers appear at the ends of the branches. Flower colors range from clear yellow and soft orange to glowing apricot and fiery red, often with deeper orange or red markings in the throat. The blooms are lightly fragrant and coincide with leaf emergence, creating a vivid seasonal moment in woodland settings.

This species is native to the Appalachian Mountains of the eastern United States, where it grows on forested slopes and ridges. Its bold flower colors, graceful branching structure, and seasonal rhythm have made it an enduring favorite in native plantings, woodland gardens, and naturalistic landscapes where spring color and regional heritage are valued.

DESCRIPTION
Rhododendron calendulaceum is a deciduous shrub admired for its dramatic spring display and open, upright form. In late spring to early summer, large clusters of trumpet-shaped flowers appear at the ends of the branches. Flower colors range from clear yellow and soft orange to glowing apricot and fiery red, often with deeper orange or red markings in the throat. The blooms are lightly fragrant and coincide with leaf emergence, creating a vivid seasonal moment in woodland settings.

This species is native to the Appalachian Mountains of the eastern United States, where it grows on forested slopes and ridges. Its bold flower colors, graceful branching structure, and seasonal rhythm have made it an enduring favorite in native plantings, woodland gardens, and naturalistic landscapes where spring color and regional heritage are valued.

 

  • Family: Ericaceae
    Height: 6 to 12 ft
    Width: 6 to 12 ft
    Foliage color: Deciduous medium-green leaves, turning yellow to orange in fall
    Flower color: Bright orange flowers, often with yellow or red tones and darker spotting
    Bloom time: Late spring to early summer
    Light requirements: Full sun to part shade
    Water requirements: Moderate
    Maintenance: Low — prune lightly after bloom
    Growing zone: USDA zones 5 to 7
    Wildlife attractors: Flowers attract bees and other pollinators

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