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Rhododendron ‘Gibraltar’

Gibraltar' Rhododendron, 'Gibraltar' Azalea, Deciduous Azalea, Midseason Azalea, Knap Hill and Exbury Azaleas

AGM Award
Rhododendron 'Gibraltar', 'Gibraltar' Rhododendron, 'Gibraltar' Azalea, Deciduous Azalea, Midseason Azalea, Knap Hill Azaleas, Exbury Azaleas, Orange Azalea, Orange Rhododendron, Orange Flowering Shrub
Rhododendron 'Gibraltar', 'Gibraltar' Rhododendron, 'Gibraltar' Azalea, Deciduous Azalea, Midseason Azalea, Knap Hill Azaleas, Exbury Azaleas, Orange Azalea, Orange Rhododendron, Orange Flowering Shrub

Setting the garden ablaze, multiple award-winning Rhododendron ‘Gibraltar’ is a medium-sized deciduous azalea that produces incredibly eye-catching ball-shaped trusses of 10 to 12 flowers. Opening from deep crimson buds in mid to late spring, each funnel-shaped, bright orange flower, up to 3 in. wide (7 cm), is elegantly frilled and flushed red-orange with a gold tinge. Slightly fragrant, they blanket this midseason Knaphill hybrid in an exceptional floral display and contrast nicely with the handsome foliage of narrow green leaves, which do not develop any appreciable fall color. Raised and introduced by Edmund de Rothschild, ‘Gibraltar’ is an extremely hardy selection that is also extraordinarily mildew resistant.

  • Grows with an open habit, up to 4-5 ft. tall and wide (120-150 cm)
  • Recipient of the prestigious Award of Garden Merit of the Royal Horticultural Society and winner of the Rhododendron of the Year Award of the American Rhododendron Society for the Mid-Atlantic, North East, North West, Great Lakes, South Central, South East, and South West regions.
  • A full sun to part shade lover, this plant is easily grown in moist, acidic, humusywell-drained soils. Plant shallowly. Protect from frost to prevent damage to flowers. Mulch annually with leaf mold to retain moisture, control weeds, and cool the soil.
  • Perfect for borders, as a flowering hedge or privacy screen, and for containers. Great for small gardens!
  • Attracts butterflies, hummingbirds, and birds.
  • Excellent mildew resistance
  • 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 5 - 8
Heat Zones 1 - 8
Climate Zones 3A, 3B, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17
Plant Type Shrubs
Plant Family Ericaceae
Genus Rhododendron
Common names Rhododendron
Exposure Full Sun, Partial Sun
Season of Interest Spring (Mid, Late)
Height 4' - 5'
(120cm - 150cm)
Spread 4' - 5'
(120cm - 150cm)
Spacing 48" - 60"
(120cm - 150cm)
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
Attracts Butterflies, Hummingbirds
Garden Uses Beds And Borders, Hedges And Screens, Patio And Containers, Small Gardens
Garden Styles Traditional Garden, Informal and Cottage, City and Courtyard
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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

Kalmia latifolia (Mountain Laurel)
Enkianthus campanulatus (Redvein Enkianthus)
Matteuccia struthiopteris (Ostrich Fern)
Aquilegia vulgaris var. stellata ‘Blue Barlow’ (Columbine)
Hydrangea arborescens ‘Annabelle’ (Smooth Hydrangea)
Dicentra spectabilis (Bleeding Heart)

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Beautiful Azaleas and Rhododendrons for the Pacific Northwest Region
Beautiful Azaleas and Rhododendrons for New England
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Azaleas and Rhododendrons with Attractive Fall Colors
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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 5 - 8
Heat Zones 1 - 8
Climate Zones 3A, 3B, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17
Plant Type Shrubs
Plant Family Ericaceae
Genus Rhododendron
Common names Rhododendron
Exposure Full Sun, Partial Sun
Season of Interest Spring (Mid, Late)
Height 4' - 5'
(120cm - 150cm)
Spread 4' - 5'
(120cm - 150cm)
Spacing 48" - 60"
(120cm - 150cm)
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
Attracts Butterflies, Hummingbirds
Garden Uses Beds And Borders, Hedges And Screens, Patio And Containers, Small Gardens
Garden Styles Traditional Garden, Informal and Cottage, City and Courtyard
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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    Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

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