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Knaphill and Exbury Azaleas Rhododendron 'Knaphill and Exbury Azaleas'

Phonetic Spelling
roh-do-DEN-dron
This plant has low severity poison characteristics.
See below
Description

Deciduous azaleas with large flower trusses in spring; excellent for naturalizing; resemble flame azaleas; excellent flower colors; very winter hardy; good fall color, moderate growth rate.

Seasons of Interest:

            Bloom:  Spring  Foliage: Fall

Wildlife Value: Excellent nectar plant for bees, hummingbirds and butterflies.  Members of the genus Rhododendron support the following specialized bee: Andrena (Andrena) cornelli.

Insects, Diseases, and Other Plant Problems:  Rhododendrons are susceptible to insect and disease problems.  Insect problems include aphids, borers, lacebugs, leafhoppers, mealybugs, mites, nematodes, scale, thrips and whitefly.  Diseases include canker, crown rot, root rot, leaf spot, rust, and powdery mildew.  Full sun can scorch the leaves and the roots rot if soil does not drain well.   A healthy plant in the right place with proper maintenance should have few problems. This plant is frequently damaged by deer.

Form:  Open; loose; spreading; upright

Poison Part:  Parts of the plant may be poisonous.

 

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 landscapes:
Lush Foundation Planting Flower Bonanza Garden
Cultivars / Varieties:
Tags:
#bees#hummingbirds#showy flowers#deciduous#wildlife plant#nectar plant#specialized bees#naturalizes#pollinator plant#butterfly friendly#problem for cats#problem for dogs#problem for horses
 
Cultivars / Varieties:
Tags:
#bees#hummingbirds#showy flowers#deciduous#wildlife plant#nectar plant#specialized bees#naturalizes#pollinator plant#butterfly friendly#problem for cats#problem for dogs#problem for horses
  • Attributes:
    Genus:
    Rhododendron
    Family:
    Ericaceae
    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:
    Open
    Spreading
    Growth Rate:
    Medium
    Texture:
    Medium
  • Cultural Conditions:
    Soil Drainage:
    Good Drainage
  • Flowers:
    Flower Color:
    Gold/Yellow
    Orange
    Pink
    White
    Flower Value To Gardener:
    Showy
    Flower Bloom Time:
    Spring
    Flower Description:
    Flowers are born in trusses; individual flowers large and showy
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Color:
    Green
    Leaf Value To Gardener:
    Showy
    Deciduous Leaf Fall Color:
    Brown/Copper
    Hairs Present:
    No
    Leaf Description:
    May have bronze tinge; good fall color
  • 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:
    Low
    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