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Sir Robert Azalea
Sir Robert is a unique and beautiful hybrid azalea that produces an abundance of large white flowers flushed in soft to medium pink and peach pink. Some petals will have stripes and you'll see random solid rose-pink flowers! All have a rose-purple splotch. Needless to say, this azalea is quite the conversation piece! More details below

Sir Robert Azalea

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Sir Robert Azalea
Rhododendron  'Sir Robert'

USDA Plant Hardiness Zones: 6a-9a (5a?)  Find Your Zone

Note:  For our customers who live and garden north of USDA Plant Hardiness Zone 6a, where this Azalea variety is not winter hardy outdoors, you can enjoy it in containers that can be moved indoors during winter and placed back outside when temperatures warm up in spring.

Special Attributes

'Sir Robert' is a Robin Hill hybrid azalea that produces an abundance of beautiful large white flowers brushed and striped in soft pink, purple and/or peachy-pink with a rose-purple spotted blotch. Occasionally, you might see a solid rose pink flower. Needless to say, this azalea is a conversation piece when in bloom from late spring through early summer.  Attractive dark green, glossy evergreen leaves on dwarf and rounded form.

Landscape & Garden Uses

Growing in a rounded mound 2-3 feet tall and 3 to 4 feet wide at maturity, Sir Robert Azalea is ideal for use as a specimen in small garden spaces and containers 14 inches or more in diameter. Plant it in small groupings, mass plantings or as a border along paths and walkways in landscape and woodland borders and home foundation plantings. A fine addition to Asian-theme gardens, Azalea gardens, cottage gardens, and partially shaded woodland gardens. 

Spacing:  2.5 to 3' for solid hedges;  6' or more for space between plants

Cultural Preferences

Evergreen Azaleas are easy to grow when planted right and in the right spot. They prefer a moist but well-drained and acidic soil that is rich in organic matter and part sun. Morning sun with afternoon shade or filtered sun is ideal. Moderate drought tolerance when established. 

Helpful Articles

Click on a link below to get helpful Azalea planting and care advice from our experts.

Plant Details

USDA Plant Hardiness Zones: 6a-9a  Find Your Zone >
Plant Type:  Evergreen Flowering Shrub
Height at Maturity:  2-3'
Width at Maturity:  3-4'
Flower Color:  White, Light Pink, Rose Pink, Dark Pink
Flower Size:  Large, 3-3.5"
Flowering Period:  Late Spring, Early Summer
Flower Type:  Single
Fragrant Flowers:  No
Foliage Color:  Medium Green to Dark Green
Fragrant Foliage:  No
Berries:  No
Berry Color:  NA
Sun Needs:  Morning Sun with Dappled or Afternoon Shade, All Day Filtered Sun, 
Water Needs:  Average
Soil Type:  Clay, Loam, Sand (Amended), Silt 
Soil Moisture / Drainage:  Well Drained Moist
Soil pH:  5.5 - 6.5
Maintenance / Care:  Low
Attracts:  Visual Attention
Resistances:  Heat, Humidity, Sun, Insect

Plant Long & Prosper!

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