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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.

 

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:
  • 'Lemon Drop'
  • 'Pink Mist'
  • 'Pink Rocket'
  • 'Viscosum'
'Lemon Drop' , 'Pink Mist', 'Pink Rocket' , 'Viscosum'
Tags:
#hummingbirds#evergreen#deciduous#poisonous#drought tolerant#wildlife plants#moths#nectar plant#specialized bees#pollinator plant#larval host plant#food source summer#food source fall#Coastal OBL#food source herbage#food source nectar#food source pollen#Piedmont Mountains FACW#wet soils tolerant#mammals#problem for cats#problem for dogs#bee friendly#problem for horses#audubon
 
Cultivars / Varieties:
  • 'Lemon Drop'
  • 'Pink Mist'
  • 'Pink Rocket'
  • 'Viscosum'
'Lemon Drop' , 'Pink Mist', 'Pink Rocket' , 'Viscosum'
Tags:
#hummingbirds#evergreen#deciduous#poisonous#drought tolerant#wildlife plants#moths#nectar plant#specialized bees#pollinator plant#larval host plant#food source summer#food source fall#Coastal OBL#food source herbage#food source nectar#food source pollen#Piedmont Mountains FACW#wet soils tolerant#mammals#problem for cats#problem for dogs#bee friendly#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