Alphabetical Plant Listing

Clethra alnifolia 'Caleb' VANILLA SPICE' (Summersweet)

Sweet Pepper Bush 'Caleb' VANILLA SPICE', Sweet Pepperbush 'Caleb' VANILLA SPICE', Summer Sweet 'Caleb' VANILLA SPICE', Summersweet 'Caleb' VANILLA SPICE'


Clethra alnifolia 'Caleb' VANILLA SPICE' (Summersweet) is a compact, slowly spreading, deciduous shrub boasting bottlebrush spikes of extremely fragrant white flowers which bloom for 4-6 weeks in mid to late summer. Each individual flower is quite large, 10-12 in. long (25-30 cm), roughly double the size of other varieties. Opening from bottom to top, they are very attractive to bees, butterflies and other pollinators, at a time of the year when there's not a wealth of nectars to choose from. The flowers give way to spikes of dark brown fruits which persist into winter, providing continuing interest. The serrated, glossy, dark green foliage warms up to golden-yellow in fall. One of its most attractive characteristics is to produce great blooms in shady locations. A popular Summersweet selection because it is more compact and its flowers are larger than the species.

  • Densely-branched, rounded, this summer-flowering shrub spreads slowly by suckers and typically grows 3-6 ft. tall and wide (90-180 cm).
  • A full sun to part shade lover, this plant is best grown in average, medium to wet, acidic, sandy soils. Tolerates full shade. Do not let the soil dry out. Clay and wet soil tolerant.
  • Flowers attract butterflies and hummingbirds. Clethra alnifolia is rarely bothered by deer.
  • Mass in mixed shrub borders for dramatic summer blooms. Great flowering shrub for shade or woodland gardens or along stream banks or ponds. May be naturalized in cottage gardens, wild gardens or naturalized areas.
  • This plant enjoys an excellent resistance to insects and diseases.
  • Promptly remove root suckers unless naturalized look is desired
  • This shrub flowers on new wood, so pruning for shape is best done in spring.
  • Propagate by cuttings.

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Requirements

Hardiness 4 – 8
Heat Zones 1 – 9
Climate Zones 1A, 1B, 2A, 2B, 3A, 3B, 4, 5, 6, A2, A3
Plant Type Shrubs
Plant Family Clethra
Exposure Full Sun, Partial Sun, Shade
Season of Interest Summer (Mid,Late)
Fall
Height 3' – 6' (90cm – 180cm)
Spread 3' – 6' (90cm – 180cm)
Spacing 60" – 72" (150cm – 180cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid
Soil Drainage Moist but Well-Drained
Characteristics Fragrant, Showy
Tolerance Clay Soil, Deer, Salt, Wet Soil
Attracts Butterflies, Hummingbirds
Garden Uses Beds and Borders, Ponds and Streams
Garden Styles Coastal Garden, Informal and Cottage, Prairie and Meadow, Traditional Garden

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Photo Courtesy of Proven Winners - www.provenwinners.com.

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 4 – 8
Heat Zones 1 – 9
Climate Zones 1A, 1B, 2A, 2B, 3A, 3B, 4, 5, 6, A2, A3
Plant Type Shrubs
Plant Family Clethra
Exposure Full Sun, Partial Sun, Shade
Season of Interest Summer (Mid,Late)
Fall
Height 3' – 6' (90cm – 180cm)
Spread 3' – 6' (90cm – 180cm)
Spacing 60" – 72" (150cm – 180cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid
Soil Drainage Moist but Well-Drained
Characteristics Fragrant, Showy
Tolerance Clay Soil, Deer, Salt, Wet Soil
Attracts Butterflies, Hummingbirds
Garden Uses Beds and Borders, Ponds and Streams
Garden Styles Coastal Garden, Informal and Cottage, Prairie and Meadow, Traditional Garden

Great Plant Combination Ideas with Clethra

Guides with Clethra

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