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Early Azalea Rhododendron roseum

Other Common Name(s):

Previously known as:

  • Rhododendron prinophyllum
Phonetic Spelling
rho-do-DEN-dron RO-zee-um
This plant has high severity poison characteristics.
See below
Description

Woody, evergreen or deciduous shrubs; leaves alternate, simple, smooth- or toothed-margined; flowers in a terminal cluster, tubular, 5-parted, white to deep pink or yellow; fruit an elongated capsule.  Hardy.

Insects, Diseases and Other Plant Problems: Susceptible many insect predators and diseases. Potential insect problems include aphids, borers, galls, lacebugs, scale, leafhoppers, mealy bugs, thrips, whiteflies and mites and disease problems include powdery mildew, blights, root rots, and leaf spots. A well-maintained healthy plant in the proper environment should have limited problems, however. This plant is frequently damaged by deer.

This plant was formally known as R. roseum.

Form: Much-branched; spreading branches

Poison Part: All parts.

Poison Delivery Mode: Ingestion

Severity: HIGHLY TOXIC, MAY BE FATAL IF EATEN!

Found in: Houseplant or interiorscape; landscape as cultivated woody shrub; forest or natural area.

 

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:
  • 'Elegans'
  • 'Marie Hoffman'
  • 'Pink Lights'
  • 'Rosey Lights'
  • 'Spicy Lights'
'Elegans', 'Marie Hoffman', 'Pink Lights', 'Rosey Lights', 'Spicy Lights'
Tags:
#bees#hummingbirds#showy flowers#deciduous#houseplant#wildlife plant#nectar plant#interiorscape#specialized bees#pollinator plant#food source fall#food source herbage#food source nectar#food source pollen#coastal FAC#Piedmont Mountains FAC#butterfly friendly#problem for cats#problem for dogs#problem for horses#audubon
 
Cultivars / Varieties:
  • 'Elegans'
  • 'Marie Hoffman'
  • 'Pink Lights'
  • 'Rosey Lights'
  • 'Spicy Lights'
'Elegans', 'Marie Hoffman', 'Pink Lights', 'Rosey Lights', 'Spicy Lights'
Tags:
#bees#hummingbirds#showy flowers#deciduous#houseplant#wildlife plant#nectar plant#interiorscape#specialized bees#pollinator plant#food source fall#food source herbage#food source nectar#food source pollen#coastal FAC#Piedmont Mountains FAC#butterfly friendly#problem for cats#problem for dogs#problem for horses#audubon
  • Attributes:
    Genus:
    Rhododendron
    Species:
    roseum
    Family:
    Ericaceae
    Life Cycle:
    Woody
    Distribution:
    Houseplant or interiorscape; landscape as cultivated woody shrub; forest or natural area
    Wildlife Value:
    Nectar from the flowers attracts hummingbirds, butterflies, and bees. Members of the genus Rhododendron support the following specialized bee: Andrena (Andrena) cornelli.
    Dimensions:
    Height: 2 ft. 0 in. - 8 ft. 0 in.
    Width: 2 ft. 0 in. - 8 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Poisonous
    Shrub
    Woody Plant Leaf Characteristics:
    Deciduous
    Habit/Form:
    Spreading
    Texture:
    Medium
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil pH:
    Acid (<6.0)
    Soil Drainage:
    Good Drainage
    Moist
    NC Region:
    Mountains
    USDA Plant Hardiness Zone:
    4a, 4b, 5b, 5a, 6a, 6b, 7a, 7b, 8b, 8a
  • Fruit:
    Display/Harvest Time:
    Fall
    Fruit Type:
    Capsule
    Fruit Description:
    elongated capsule. Displays from August to October.
  • Flowers:
    Flower Color:
    Gold/Yellow
    Pink
    Flower Bloom Time:
    Summer
    Flower Petals:
    4-5 petals/rays
    Flower Description:
    terminal cluster, tubular, 5-parted, white to deep pink or yellow. Blooms from May to June.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Color:
    Gold/Yellow
    Green
    Deciduous Leaf Fall Color:
    Brown/Copper
    Leaf Type:
    Simple
    Leaf Arrangement:
    Alternate
    Hairs Present:
    No
    Leaf Description:
    Alternate, simple, bright green leaves, smooth- or toothed-margined; fall color is green to bronze
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Attracts:
    Butterflies
    Hummingbirds
    Pollinators
    Specialized Bees
    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