Summer Snowflake Doublefile Viburnum (Viburnum plicatum f. tomentosum ‘Summer Snowflake’) is an elegant deciduous flowering shrub prized for its abundant white lacecap flowers, graceful horizontal branching, and exceptionally long flowering season. Its naturally layered growth habit creates beautiful architectural interest, making it an outstanding choice for traditional landscapes, estate-style gardens, and mixed flowering shrub borders.
Beginning in late spring, Summer Snowflake produces an impressive display of delicate white lacecap flower clusters arranged along its tiered branches. Unlike many traditional viburnums that flower primarily in spring, Summer Snowflake often continues producing additional blooms throughout summer, providing an extended season of beautiful white flowers.
Throughout the growing season, Summer Snowflake maintains attractive, deeply veined dark green foliage that complements its distinctive branching structure. Following flowering, ornamental berries may develop, initially appearing red before maturing to black. In autumn, the foliage develops attractive shades of burgundy, reddish-purple, and bronze, adding another layer of seasonal interest.
Summer Snowflake is particularly well suited for formal estate-style landscapes, traditional gardens, cottage gardens, and woodland edges. Its elegant horizontal branching makes it an excellent specimen shrub, while its long flowering season provides dependable color in mixed shrub borders and foundation plantings where adequate growing space is available.
More About Summer Snowflake Doublefile Viburnum
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Deciduous Flowering Shrub
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Elegant Horizontal, Tiered Branching
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Upright, Spreading Growth Habit
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Abundant White Lacecap Flowers
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Extended Spring and Summer Blooming
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Additional Flowers Throughout Summer
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Attractive Deeply Veined Green Foliage
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Burgundy-Red and Purple Fall Color
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Ornamental Red-to-Black Berries, When Produced
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Pollinator Friendly
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Bird Friendly
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Excellent Specimen Shrub
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Architectural Landscape Interest
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Moderate Growth Rate
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Low Maintenance Once Established
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Mixed Shrub Border, Foundation Planting, Woodland Edge, Specimen Planting
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Excellent Spring, Summer, and Fall Interest
Height: 5–8 Feet
Spread: 6–10 Feet
Hardiness Zone: 5–8
Characteristics
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Sun Exposure: Full Sun to Partial Shade
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Season of Interest: Spring, Summer, Fall
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Soil Moisture: Average to Moist, Well Draining
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Attributes: Flowering, Extended Blooming, Horizontal Branching, Architectural Form, Fall Color, Pollinator Friendly
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Foliage Color: Dark Green; Burgundy-Red to Purple in Fall
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Flower Color: White
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Flower Fragrance: Little to None
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Berry Color: Red Maturing to Black, When Produced
Care & Maintenance Tips
Planting:
Plant in full sun to partial shade in fertile, well-drained soil. Summer Snowflake performs best in locations with consistent moisture and good air circulation. Choose a planting location that provides adequate room for its naturally spreading, tiered branches.
Watering:
Water regularly during the first growing season to establish a strong root system. Once established, Summer Snowflake performs best with consistent moisture, particularly during extended periods of hot, dry weather. Avoid poorly drained locations or areas with prolonged standing water.
Fertilizing:
Apply a balanced slow-release fertilizer in early spring if needed. Incorporating compost or organic matter around the root zone can improve soil fertility and moisture retention. Avoid excessive fertilization, which may encourage foliage growth at the expense of flowering.
Pruning:
Summer Snowflake naturally develops an attractive layered growth habit and generally requires minimal pruning. If shaping is necessary, prune lightly immediately after the main spring flowering period. Avoid heavy shearing, which can destroy its distinctive horizontal branching and reduce additional summer blooms.
Remove dead, damaged, or crossing branches as needed to maintain healthy growth.
Winter Care:
Summer Snowflake is a cold-hardy deciduous shrub that typically requires little winter protection once established. Apply a layer of organic mulch around the root zone to conserve moisture and moderate soil temperatures, keeping mulch away from the main stems.
Pest Prevention:
Monitor periodically for aphids and other common viburnum pests. Maintain good air circulation and healthy growing conditions to reduce stress and discourage pest and disease problems.
