Vanilla Spice Summersweet (Clethra alnifolia ‘Caleb’) Vanilla Spice Summersweet (Clethra alnifolia ‘Caleb’) is a compact, deciduous native shrub prized for its extra-large, fragrant white flowers and glossy dark green foliage. Selected by Proven Winners, this cultivar stands out among Summersweet varieties for its oversized blooms and clean, upright habitmaking it a showy and dependable choice for moist or shaded landscapes. Distinctive Features ‘Vanilla Spice’ is best known for its unusually large flower spikes, reaching up to twice the size of standard Clethra cultivars. The pure white, bottlebrush blooms appear in mid to late summer, releasing a strong, sweet fragrance that draws in pollinators. Its dark green leaves are broader and shinier than typical Clethra, adding richness and texture to the landscape. In fall, the foliage turns a warm golden yellow, extending its seasonal appeal. Growing Conditions Sun Exposure: Full sun to partial shade Soil: Moist, acidic, well-drained soils; tolerant of sandy, loamy, or clay textures Water: Moderate to high; thrives in consistently moist soil USDA Hardiness Zones: 49 Ideal Uses Focal Point: Oversized white blooms and fragrance make a striking seasonal display Foundation Planting: Compact form and summer flowers add charm to home landscapes Rain Gardens: Performs well in low-lying, moisture-retentive areas Pollinator Gardens: Attracts bees, butterflies, and hummingbirds Woodland Edges: Native beauty fits well into dappled shade environments Low Maintenance Care Watering: Keep soil consistently moist, especially in dry weather Pruning: Prune lightly after flowering to maintain shape if desired Fertilizing: Feed in early spring with a balanced fertilizer if needed Mulching: Apply mulch to conserve moisture and maintain soil acidity Protection: Avoid alkaline or overly dry soils for best performance Why Choose Vanilla Spice Summersweet? Large White Blooms: Flower spikes are significantly larger than most Clethra varieties Strong Fragrance: Sweet scent fills the garden in mid to late summer Glossy Foliage: Deep green leaves stay clean and attractive through fall Low Maintenance: Thrives in wet soils with little pruning required Focal Point: Bold floral display and compact size make it perfect for standout plantings Clethra alnifolia ‘Caleb’ (Vanilla Spice Summersweet) combines oversized blooms, rich fragrance, and native versatilityideal as a midsummer focal point in moist borders, shaded beds, and pollinator-friendly gardens.