Alphabetical Plant Listing

Rhododendron 'Gibraltar'

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


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 beautyRead More

Not sure which Rhododendron - Azalea to pick?
Compare All Rhododendron - Azalea

Buy Rhododendron 'Gibraltar'

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 Azaleas - Rhododendrons, Rhododendron - Azalea
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)
Water Needs Average
Maintenance Low
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 City and Courtyard, Informal and Cottage, Traditional Garden

Buy Plants

Guides with Azaleas - Rhododendrons

Great Plant Combination Ideas with Rhododendron - Azalea

Guides with Rhododendron - Azalea


bigemrg / 123RF Stock Photo, Peter Turner Photography / Shutterstock

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.


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 Azaleas - Rhododendrons, Rhododendron - Azalea
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)
Water Needs Average
Maintenance Low
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 City and Courtyard, Informal and Cottage, Traditional Garden

Guides with Azaleas - Rhododendrons

Great Plant Combination Ideas with Rhododendron - Azalea

Guides with Rhododendron - Azalea

Plant Calculator

How many Rhododendron 'Gibraltar' do I need for my garden?

%
ft
ft

Your Shopping List

Plant Quantity
Rhododendron 'Gibraltar'

Find your Hardiness Zone

Find your Climate Zone

Find your Heat Zone

Join Gardenia.net

Create a membership account to save your garden designs and to view them on any device.

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.

Join now and start creating your dream garden!

Create a New Collection

Optional. For your reference.


Move Selected Plants to a Different Collection


Delete Collection

This field is required.

Rename Collection

This field is required.