Rhododendron, Azalea 'Gibraltar'

Rhododendron

Family
Ericaceae (er-ek-AY-see-ee)
Genus
Rhododendron (roh-do-DEN-dron)
Synonym
Spacing
4-6 ft. (1.2-1.8 m)
Hardiness
4-6 ft. (1.2-1.8 m)
Sun Exposure
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
Sun to Partial Shade
Bloom Color
All parts of plant are poisonous if ingested
Bloom Time
Orange
Red-Orange
Foliage
Late Spring/Early Summer
Height
Shrubs
Sun Exposure
Hardiness
Bloom Color
Bloom Time
Bloom Time
Bloom Color
Bloom Time
Bloom Time
Bloom Color
Bloom Color
Bloom Time
Other Details
Other details
Deciduous
Seed Collecting
Category
From softwood cuttings
Patent Information
Foliage Color
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Bloom Characteristics
Water Requirements
Where to Grow
Seed Collecting
Fruit Shape
Fruit Size
Fruit Colors
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
Growing Habit
Days to Maturity
Seed Type
Disease Resistance
Leaf Type
Foliage Color
Bloom Characteristics
Water Requirements
Where to Grow
Other details
Propagation Methods
Soil pH requirements
Patent Information
Plant Size (check one)
Growing Habit
Growth Rate
Leaf Shape
Leaf Appearance
Degree to which the appearance is present
Leaf Texture (top)
Leaf Texture (bottom)
Leaf Color
Color of Leaf Margin
Leaf Substance
Number of Vein Pairs
Appearance of Margin
Margin Width
Flower Shape
Flower Fragrance
Non-patented
Does it set seed?
Flower Size
Flower Type
Blooming Habit
Foliage Habit
Color Patterns
Awards (if applicable)
Seed Type
Growth Habit
Days to Maturity
Awards (if applicable)
Bloom Shape
Other Details
Pruning Instructions
Kernel Color
Flower Shape
Flower Habit
Bloom Size
Color Pattern
Bloom Shape
Pruning Groups
Bloom Diameter
Heat (Pungency)
Fruit Shape
Fruit Size
Fruit Color
Disease Resistance
Seed Type
Flower Size
Size/Type
Flower Characteristics
Leaf Shape/Type
Leaf Texture
Leaf Color
Propagation
Pollination
Bearing Habit
Rootstock Vigor
Disease Resistance
Fruit Usage
Classification
Regional

This plant is said to grow outdoors in the following regions:

Huntsville, Alabama

Hattieville, Arkansas

GARBERVILLE, California

Chicago, Illinois

Canada, Kentucky

Lancaster, Kentucky

Pikeville, Kentucky

Alfred, Maine

Edgewater, Maryland

Valley Lee, Maryland

Mashpee, Massachusetts

Charlotte, North Carolina

Gibsonburg, Ohio

Lakewood, Ohio

Lansdale, Pennsylvania

Conway, South Carolina

Virginia Beach, Virginia

Madison, Wisconsin

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Gardener's Notes:

2
positives
3
neutrals
0
negative
Sort By:
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W
Lakewood, OH | March 2012 | positive

LOYAL & GORGEOUS! Mine is 23 yrs planted, sits in floods every spring, has been through grape attacks, groundcover attacks, you name it!...Read More

G
North Aurora, IL | June 2010 | neutral

I have four of these and all but one are really struggling. I haven't tested the soil yet, but suspect that winter protection might be cr...Read More

K
Canada, KY | May 2010 | positive

This plant grows beautifully here and is an extremely reliable bloomer! Maybe because some of its ancestors are native to this part of th...Read More

S
Gibsonburg, OH | May 2008 | neutral

I've been 'growing' this for three years. I have not had it bloom yet, nor has it gotten any larger.....

Having said that...Read More

R
Walkerton, VA (Zone 7a) | January 2006 | neutral

Beautiful when it blooms which doesn't happen regularly in my experience. Very slow grower.

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