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Rhododendron decorum (Great White Rhododendron)

Great White Rhododendron, Midseason Rhododendron, Evergreen Rhododendron

AGM Award
Rhododendron Decorum, Great White Rhododendron, Midseason Rhododendron, Evergreen Rhododendron, Fragrant Rhododendron, White Rhododendron, White Flowering Shrub

Native to China, Myanmar, and Laos, Rhododendron decorum (Great White Rhododendron) is a very fragrant, large, evergreen shrub or small tree with attractive spring flowers, decorative bark, and handsome dark green leaves. Blooming heavily in mid to late spring, this Rhododendron species bears loose trusses of 7 to 12 large, strongly scented, funnel-shaped, white or pink-tinged flowers with a yellowish-green blotch in the throat. The foliage of elliptic, leathery leaves usually emerges with bronzy shades and remains handsome all year round. Easy to grow, this magnificent species is also vigorous, hardy, and tolerant of sun, warm, and dry conditions. It also has a tolerance for neutral pH soils.

  • Grows with a bushy, erect, sometimes straggly habit, up to 4-15 ft. tall (1.2- 4.5m) and 3-10 ft. wide (90-300 cm).
  • Recipient of the prestigious Award of Garden Merit of the Royal Horticultural Society
  • Sun part shade lover, this plant is easily grown in moist, acidic, humusywell-drained soils. Plant shallowly in a location protected from strong winter winds. Protect from frost to prevent damage to flowers. Mulch annually with leaf mold to retain moisture, control weeds, and cool the soil.
  • Perfect for shrub borders or mixed borders, hedges or screens, and shade gardens.
  • Attracts butterflies, hummingbirds, and birds.
  • Removing spent flowers promotes new growth.
  • All parts of the plant are poisonous if ingested.
  • Toxic to dogs, toxic to cats, toxic to horses.

Rhododendron and Azalea: How To Grow And Care with Success


Want to learn how to grow and care for rhododendron and azalea flowers like a pro? Follow these simple steps and enjoy their beauty

Requirements

Hardiness 7 - 9
Heat Zones 1 - 8
Climate Zones 6, 7, 8, 9, 14, 15, 16, H1
Plant Type Shrubs
Plant Family Ericaceae
Genus Rhododendron
Common names Rhododendron
Exposure Full Sun, Partial Sun
Season of Interest Spring (Mid, Late)
Height 4' - 15'
(120cm - 4.6m)
Spread 3' - 10'
(90cm - 3m)
Spacing 36" - 120"
(90cm - 3m)
Maintenance Low
Water Needs Average
Soil Type Clay, Loam, Sand
Soil pH Acid
Soil Drainage Moist but Well-Drained
Characteristics Fragrant, Plant of Merit, Showy, Evergreen
Tolerance Rabbit
Attracts Butterflies, Hummingbirds
Garden Uses Banks And Slopes, Beds And Borders, Hedges And Screens, Wall-Side Borders
Garden Styles Traditional Garden, Informal and Cottage
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Alternative Plants to Consider

Rhododendron Autumn Royalty
Rhododendron macrophyllum (Pacific Rhododendron)
Rhododendron alabamense (Alabama Azalea)
Rhododendron periclymenoides (Pinxterbloom Azalea)
Rhododendron catawbiense (Catawba Rosebay)
Rhododendron maximum (Great Laurel)

Recommended Companion Plants

Brunnera macrophylla ‘Jack Frost’ (Siberian Bugloss)
Matteuccia struthiopteris (Ostrich Fern)
Anemone nemorosa (Wood Anemone)
Hyacinthoides hispanica ‘Excelsior’ (Spanish Bluebells)
Hosta (Plantain Lily)
Hamamelis (Witch Hazel)

Find In One of Our Guides or Gardens

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Add a Splash of Color: Perfect Flowering Shrubs for Small Gardens
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Great Bulbs and Perennials as Companion Plants for Azaleas and Rhododendrons
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Beautiful Azaleas and Rhododendrons for Northern California
Beautiful Azaleas and Rhododendrons for the Midwest
Beautiful Azaleas and Rhododendrons for the Pacific Northwest Region
Beautiful Azaleas and Rhododendrons for New England
Beautiful Azaleas and Rhododendrons for the Mid-Atlantic Region
Azaleas and Rhododendrons for Small Gardens
Extend the Blooming Season of your Azaleas and Rhododendrons
Azaleas and Rhododendrons with Attractive Fall Colors
Fragrant Azaleas and Rhododendrons
Hardiest Azaleas and Rhododendrons
Choosing Perfect Azaleas and Rhododendrons
Best Companion Plants for Azaleas and Rhododendrons
Azaleas and Rhododendrons: What is the Difference?
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
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Requirements

Hardiness 7 - 9
Heat Zones 1 - 8
Climate Zones 6, 7, 8, 9, 14, 15, 16, H1
Plant Type Shrubs
Plant Family Ericaceae
Genus Rhododendron
Common names Rhododendron
Exposure Full Sun, Partial Sun
Season of Interest Spring (Mid, Late)
Height 4' - 15'
(120cm - 4.6m)
Spread 3' - 10'
(90cm - 3m)
Spacing 36" - 120"
(90cm - 3m)
Maintenance Low
Water Needs Average
Soil Type Clay, Loam, Sand
Soil pH Acid
Soil Drainage Moist but Well-Drained
Characteristics Fragrant, Plant of Merit, Showy, Evergreen
Tolerance Rabbit
Attracts Butterflies, Hummingbirds
Garden Uses Banks And Slopes, Beds And Borders, Hedges And Screens, Wall-Side Borders
Garden Styles Traditional Garden, Informal and Cottage
How Many Plants
Do I Need?
Explore Great Plant Combination Ideas
Rhododendron
Guides with
Rhododendron
Not sure which Rhododendron to pick?
Compare Now

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