How to Grow Viburnum Summer Snowflake
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Viburnum Summer Snowflake
Viburnum plicatum var. plicatum 'Summer Snowflake'
shrubSummer Snowflake is a deciduous ornamental shrub prized for its showy, lacecap white flower clusters that bloom prolifically throughout summer and into fall. This compact cultivar reaches 4-6 feet tall and wide, making it ideal for smaller landscapes while providing extended seasonal interest. The flowers attract pollinators and are followed by red berries that ripen to black.
When should you plant Viburnum Summer Snowflake in your zone?
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Example Viburnum Summer Snowflake timeline · Pittsburgh, PA (Zone 6b)
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Plant Viburnum Summer Snowflake
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Viburnum Summer Snowflake
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5-9, with best performance in zones 5-8
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Get my Viburnum Summer Snowflake timeline →Growth Stages
Establishment
First 6-12 monthsYoung transplant focusing on root development with minimal branching
Water deeply and regularly, mulch base with 2-3 inches of organic material, avoid fertilizing first year; protect from wind stress
Vegetative Growth
Year 2-3Branching increases and foliage fills in; plant develops characteristic form
Continue consistent watering, apply balanced fertilizer in early spring (year 2+), prune lightly after flowering to shape, monitor for pests
Flowering
June-October (intermittent with flushes)Abundant white lacecap flower clusters appear along branches, often in waves from summer through early fall
Deadhead spent flowers to encourage repeat blooming, ensure adequate moisture during blooming periods, provide afternoon shade in hot climates to extend bloom
Fruiting
August-OctoberRed berries develop from pollinated flowers, gradually darkening to black as they mature
Avoid heavy pruning during fruiting to preserve berries, which attract birds; no fertilizer needed during this phase
Dormancy
November-MarchLeaves drop in fall, revealing branching structure; plant enters winter rest period
Cease fertilizing in late summer, reduce watering in winter, perform structural pruning in late winter while dormant if needed, mulch around base to protect roots in colder zones
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Prune out infested branches, apply neem oil or insecticidal soap in spring before eggs hatch, encourage natural predators
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Hand-pick early morning, apply neem oil or horticultural oil, use traps away from plant, avoid excessive nitrogen fertilizer
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Strong water spray to dislodge, insecticidal soap spray, neem oil, encourage beneficial insects like ladybugs
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Horticultural oil spray in winter or dormant season, prune heavily infested branches, monitor regularly
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Improve air circulation through pruning, avoid overhead watering, apply sulfur or fungicidal spray in severe cases
Uses
Cut Flowers & Arrangements
CraftThe delicate lacecap white flowers make excellent long-lasting cut flowers for fresh floral arrangements and can be used in summer and fall bouquets. [source]
Pollinator & Bird Support
WildlifeFlowers attract bees, butterflies, and other beneficial insects. The ripening berries provide valuable fall and winter food for migratory and resident birds. [source]
Ornamental Landscaping
HouseholdValued as a specimen plant or in mixed borders, providing extended season of interest with repeated blooming, attractive berries, and winter branch structure. [source]
Traditional Uses
MedicinalRelated Viburnum species have been used traditionally in herbalism for nervous tension and women's health, though Summer Snowflake is primarily grown ornamentally. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
This ornamental shrub is not harvested for food. Enjoy cut flowers by snipping clusters of lacecap flowers in early morning; place immediately in water for fresh arrangements that last 1-2 weeks. Allow berries to remain on plant for fall color and bird food.
Fun Facts
- 🌱 Summer Snowflake was developed as a compact, repeat-blooming selection of the Japanese Snowball Viburnum, offering more flowers over a longer season than the species.
- 🌱 Unlike many viburnums that produce a single spring flush, this cultivar produces flowers in multiple waves from early summer through fall when deadheaded or naturally dropping spent flowers.
- 🌱 The name 'Snowflake' refers to the appearance of the delicate white lacecap flowers, which resemble snowflakes scattered across the dark green foliage.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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