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Rhododendron flammeum

Common Name(s):

Previously known as:

  • Rhododendron speciosum
Phonetic Spelling
rho-doh-DEN-dron FLAM-ee-um
This plant has high severity poison characteristics.
See below
Description

Piedmont Azalea is a woody, evergreen or deciduous shrub in the Ericaceae family. It is native to the mountains of SC and GA. The flowers appear in large clusters in April in a variety of colors from yellow to pink to red. For an azalea, It is tolerant of heat and humidity.

Plant in humus-rich acidic moist but well-drained soils in partial shade to dappled shade. Poorly drained soils will lead to root rot. Use in a woodland garden, for naturalizing, foundation plantings, or as a specimen, hedge, or shady shrub border.

 

For suitable alternatives, see this video created by Charlotte Glen as part of the Plants, Pests, and Pathogens series.

VIDEO Created by Elizabeth Meyer for "Trees, Shrubs and Conifers" a plant identification course offered in partnership with Longwood Gardens.

More information on Rhododendron.

Profile Video:
See this plant in the following landscape:
Cultivars / Varieties:
Tags:
#hummingbirds#evergreen#deciduous#heat tolerant#specimen#wildlife plant#pink flowers#nectar plant#native bees#shade garden#orange flowers#specialized bees#pollinator plant#naturalized area#small group plantings#problem for cats#problem for dogs#bee friendly#problem for horses#woodland garden
 
Cultivars / Varieties:
Tags:
#hummingbirds#evergreen#deciduous#heat tolerant#specimen#wildlife plant#pink flowers#nectar plant#native bees#shade garden#orange flowers#specialized bees#pollinator plant#naturalized area#small group plantings#problem for cats#problem for dogs#bee friendly#problem for horses#woodland garden
  • Attributes:
    Genus:
    Rhododendron
    Species:
    flammeum
    Family:
    Ericaceae
    Recommended Propagation Strategy:
    Layering
    Seed
    Stem Cutting
    Country Or Region Of Origin:
    southeastern U.S.
    Wildlife Value:
    Members of the genus Rhododendron support the following specialized bee: Andrena (Andrena) cornelli. Attracts hummingbirds and butterflies.
    Dimensions:
    Height: 6 ft. 0 in. - 8 ft. 0 in.
    Width: 6 ft. 0 in. - 8 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Poisonous
    Shrub
    Woody Plant Leaf Characteristics:
    Deciduous
    Habit/Form:
    Mounding
    Growth Rate:
    Slow
    Maintenance:
    Low
    Texture:
    Coarse
  • Cultural Conditions:
    Light:
    Dappled Sunlight (Shade through upper canopy all day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    High Organic Matter
    Soil pH:
    Acid (<6.0)
    Soil Drainage:
    Good Drainage
    Moist
    NC Region:
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    6b, 6a, 7b, 7a
  • Fruit:
    Fruit Color:
    Brown/Copper
    Fruit Type:
    Capsule
    Fruit Description:
    Elongated capsule with many seeds
  • Flowers:
    Flower Color:
    Gold/Yellow
    Orange
    Pink
    Red/Burgundy
    Flower Value To Gardener:
    Showy
    Flower Bloom Time:
    Spring
    Flower Shape:
    Tubular
    Flower Petals:
    4-5 petals/rays
    Flower Size:
    1-3 inches
    Flower Description:
    1.2 to 1.8 in. scarlet, yellow, pink, salmon, bright red tubular flowers with a darker splotch on the upper lobe and long extruded stamens in clusters up to 15 flowers in April -May
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Color:
    Green
    Deciduous Leaf Fall Color:
    Gold/Yellow
    Leaf Type:
    Simple
    Leaf Arrangement:
    Alternate
    Leaf Shape:
    Elliptical
    Leaf Margin:
    Entire
    Hairs Present:
    No
    Leaf Length:
    1-3 inches
    Leaf Width:
    < 1 inch
    Leaf Description:
    Up to 3.5-inch long oval leaves with yellow fall color.
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Location:
    Naturalized Area
    Woodland
    Landscape Theme:
    Pollinator Garden
    Shade Garden
    Design Feature:
    Border
    Foundation Planting
    Hedge
    Specimen
    Attracts:
    Hummingbirds
    Pollinators
    Specialized Bees
    Resistance To Challenges:
    Heavy Shade
    Problems:
    Problem for Cats
    Problem for Dogs
    Problem for Horses
  • Poisonous to Humans:
    Poison Severity:
    High
    Poison Symptoms:
    Salivation, watering of eyes and nose, abdominal pain, loss of energy, depression, nausea and vomiting, diarrhea, weakness, cardiac failure, difficult breathing, progressive paralysis of arms and legs, coma.
    Poison Toxic Principle:
    Andromedotoxin, Grayantoxin
    Causes Contact Dermatitis:
    No
    Poison Part:
    Bark
    Flowers
    Fruits
    Leaves
    Roots
    Sap/Juice
    Seeds
    Stems