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Vaccinium corymbosum Vaccinium corymbosum
Rhododendron roseum Rhododendron prinophyllum
Hibiscus 'Fireball' Hibiscus 'Fireball'

Rhododendron 'Knaphill and Exbury Azaleas'

Common Name(s):

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.

More information on Rhododendron.

Cultivars / Varieties:
Tags:
#bees#hummingbirds#showy flowers#deciduous#wildlife plant#nectar plant#specialized bees#naturalizes#pollinator plant#butterfly friendly
 
Rhododendron Exbury hybrid
Exbury white flower cluster Photo by Tim Waters http://creativecommons.org/licenses/by-nc-nd/2.0/ CC BY-NC-ND 2.0
Rhododendron Knaphill Homebush hybrid
Knaphill Homebush flower close-up Photo by KingsbraeGardens CC BY-NC-ND 2.0
Rhododendron Knaphill Apricot hybrid
Knaphill Apricot hybrid in bloom Tim Waters CC BY-NC-ND 2.0
Rhododendron Knaphill and Exbury hybrids
Form Craig Baldwin CC BY 2.0
Rhododendron Knaphill and Exbury hybrids
Rhododendron Knaphill and Exbury hybrids Wendy Cutler CC BY 2.0
Cultivars / Varieties:
Tags:
#bees#hummingbirds#showy flowers#deciduous#wildlife plant#nectar plant#specialized bees#naturalizes#pollinator plant#butterfly friendly
  • 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
    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:
    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
  • 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, difficult breathing, progressive paralysis of arms and legs, coma.
    Poison Toxic Principle:
    Andromedotoxin
    Causes Contact Dermatitis:
    No
    Poison Part:
    Bark
    Flowers
    Fruits
    Leaves
    Roots
    Sap/Juice
    Seeds
    Stems