David C. Royster
Family
Ericaceae
Botanical Name
RHODODENDRON 'Homebush'( Knap Hill Hybrid)
Plant Common Name
Deciduous Azalea
General Description
Dense clusters of luminous deep cherry-pink semi-double flowers adorn this popular Knap Hill Hybrid azalea in late spring, before the foliage has fully emerged. This upright open medium-sized shrub has elliptical light-green leaves that color nicely in fall.
Developed in the late nineteenth and early twentienth centuries at the famed Knap Hill Nursery in England, Knap Hill Hybrids are deciduous azaleas whose ancestry includes the Ghent and Molle hybrids and several Japanese and American species.
Azaleas prefer sites with partial shade and highly organic acid soil that is evenly moist but well drained. Plant them shallowly and mulch well to conserve moisture and suppress weeds. They prefer warm summers and cool winters and require some winter cold for good growth. The flower buds develop in summer for the following spring’s display, so prune shortly after flowering, if necessary. It is best to place them where they will not require restrictive pruning.
Knap Hill azaleas are popular for woodland gardens, shaded beds and borders.
Characteristics
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AHS Heat Zone
8 - 1
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USDA Hardiness Zone
6 - 8
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Sunset Zone
3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17
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Plant Type
Shrub
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Sun Exposure
Full Sun, Partial Sun, Partial Shade
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Height
6'-10' / 1.8m - 3.0m
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Width
5'-8' / 1.5m - 2.4m
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Bloom Time
Spring, Late Spring
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Native To
Hybrid Origin
Growing Conditions
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Soil pH
Acidic
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Soil Drainage
Well Drained
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Soil type
Loam, Sand
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Growth Rate
Medium
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Water Requirements
Average Water
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Habit
Upright/Erect
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Seasonal Interest
Spring, Fall
Ornamental Features
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Flower Interest
Showy
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Flower Color
Pink, Rose
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Foliage Color (Spring)
Light Green
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Foliage Color (Summer)
Light Green
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Foliage Color (Fall)
Red, Burgundy, Bronze
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Bark Color
Brown, Gray
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Fragrant Flowers
No
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Fragrant Fruit
No
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Fragrant Foliage
No
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Bark or Stem Fragrant
No
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Flower Petal Number
Semi-Double
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Repeat Bloomer
No
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Showy Fruit
No
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Edible Fruit
No
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Showy Foliage
Yes
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Foliage Texture
Medium
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Foliage Sheen
Matte
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Evergreen
No
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Showy Bark
No
Special Characteristics
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Bark Texture
Smooth
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Usage
Feature Plant, Hedges, Mixed Border, Topiary / Bonsai / Espalier
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Sharp or Has Thorns
No
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Invasive
No
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Attracts
Hummingbirds, Butterflies
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Self-Sowing
No