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Rhododendron viscosum

Phonetic Spelling
rho-doh-DEN-dron vis-KOH-sum
This plant has high severity poison characteristics.
See below
Description

Woody, evergreen or deciduous shrubs that forms a thicket with age; loose open habit.  Toleartes wet planting sites.

Wildlife:  Members of the genus Rhododendron support the following specialized bee: Andrena (Andrena) cornelli Tolerates damage by rabbits.

 

 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:
  • 'Lemon Drop'
  • 'Pink Mist'
  • 'Pink Rocket'
  • 'Viscosum'
'Lemon Drop' , 'Pink Mist', 'Pink Rocket' , 'Viscosum'
Tags:
#bees#hummingbirds#evergreen#deciduous#poisonous#drought tolerant#wildlife plant#nectar plant#wet sites#specialized bees#pollinator plant#food source summer#food source fall#Coastal OBL#food source herbage#food source nectar#food source pollen#Piedmont Mountains FACW#mammals#butterfly larvae#moth#problem for cats#problem for dogs#problem for horses#audubon
 
Cultivars / Varieties:
  • 'Lemon Drop'
  • 'Pink Mist'
  • 'Pink Rocket'
  • 'Viscosum'
'Lemon Drop' , 'Pink Mist', 'Pink Rocket' , 'Viscosum'
Tags:
#bees#hummingbirds#evergreen#deciduous#poisonous#drought tolerant#wildlife plant#nectar plant#wet sites#specialized bees#pollinator plant#food source summer#food source fall#Coastal OBL#food source herbage#food source nectar#food source pollen#Piedmont Mountains FACW#mammals#butterfly larvae#moth#problem for cats#problem for dogs#problem for horses#audubon
  • Attributes:
    Genus:
    Rhododendron
    Species:
    viscosum
    Family:
    Ericaceae
    Life Cycle:
    Woody
    Wildlife Value:
    Members of the genus Rhododendron support the following specialized bee: Andrena (Andrena) cornelli. Tolerates damage by rabbits.
    Dimensions:
    Height: 2 ft. 0 in. - 8 ft. 0 in.
    Width: 3 ft. 0 in. - 8 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Native Plant
    Poisonous
    Shrub
    Woody Plant Leaf Characteristics:
    Broadleaf Evergreen
    Deciduous
    Habit/Form:
    Open
    Spreading
  • 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 Drainage:
    Good Drainage
    Moist
    Occasionally Wet
    Available Space To Plant:
    3 feet-6 feet
    NC Region:
    Coastal
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    4a, 4b, 5b, 5a, 6b, 6a, 7b, 7a, 8a, 8b, 9b, 9a
  • Fruit:
    Display/Harvest Time:
    Fall
    Summer
    Fruit Type:
    Capsule
    Fruit Description:
    Elongated capsule. Displays from July to October.
  • Flowers:
    Flower Color:
    White
    Flower Value To Gardener:
    Fragrant
    Showy
    Flower Bloom Time:
    Summer
    Flower Shape:
    Tubular
    Flower Petals:
    4-5 petals/rays
    fused petals
    Flower Description:
    Very fragrant, sticky white flowers bloom from May to July in a terminal cluster, tubular, 5-parted.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Broadleaf Evergreen
    Deciduous
    Leaf Color:
    Green
    Red/Burgundy
    Leaf Type:
    Simple
    Leaf Arrangement:
    Alternate
    Leaf Margin:
    Entire
    Serrate
    Hairs Present:
    No
    Leaf Description:
    Alternate, simple, lustrous green leaves; smooth- or toothed-margined
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Location:
    Houseplants
    Naturalized Area
    Woodland
    Landscape Theme:
    Butterfly Garden
    Pollinator Garden
    Attracts:
    Bees
    Butterflies
    Moths
    Pollinators
    Small Mammals
    Specialized Bees
    Resistance To Challenges:
    Heat
    Rabbits
    Wet Soil
    Problems:
    Poisonous to Humans
    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, difficult breathing, progressive paralysis of arms and legs, coma.
    Poison Toxic Principle:
    Andromedotoxin
    Causes Contact Dermatitis:
    No
    Poison Part:
    Bark
    Flowers
    Fruits
    Leaves
    Roots
    Seeds
    Stems