Japanese snowball 'Grandiflorum' (Viburnum plicatum 'Grandiflorum')

Japanese snowball 'Grandiflorum'

Also known as: Japanese snowball bush 'Grandiflorum'

Japanese snowball 'Grandiflorum' is a deciduous shrub characterized by strikingly tiered, horizontal branches, which create a distinct layered effect. Its large, white lacecap flowers bloom profusely in spring, drawing attention with their ornamental quality. The deeply veined, dark green leaves turn red-purple in autumn, providing multi-seasonal interest in temperate garden landscapes.

Scientific classification

Honeysuckles, moschatels and allies

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Perennial

Lifespan

Tree, Shrub

Plant Type

Mid spring, Late spring, Early summer, Mid summer

Bloom Time

Mid summer, Late summer, Early fall, Mid fall

Harvest Time

4 m

Plant Height

4 m

Spread

White

Flower Color

Winter dormancy

Dormancy

Deciduous

Leaf type

5 - 32 ℃

Ideal Temperature

Care Guide for Japanese snowball 'Grandiflorum'

Twice per week

Water

Full sun

Sunlight

5 - 32 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Moist soil enhances the vigor of japanese snowball 'Grandiflorum'. Insufficient watering reduces ornamental value and disrupts flowering. Proper irrigation is crucial during transplanting for 3-4 weeks. In dry conditions, 7-8 mm of weekly water suffices. Maintain moist soil, but avoid overwatering to prevent root rot.

Fertilize: Proper organic fertilization enhances soil structure and fertility, crucial for japanese snowball 'Grandiflorum' growth. Apply basal fertilizer during transplanting and every two weeks during active growth. Avoid fertilizing soft cuttings until sprouting; use nitrogen-rich fertilizer for transplants, switching to phosphorus-rich during flowering stages.

Pruning: Japanese snowball 'Grandiflorum' features large, showy white flowers and thrives with early spring pruning. Remove dead or crowded branches to improve air circulation and light infiltration, promoting healthy growth and attractive form. Pruning also minimizes disease risk and enhances blooming vitality.

Propagation: Growing japanese snowball 'Grandiflorum' from seeds is not advisable due to a lengthy process of 12-18 months. Instead, use soft cuttings with 2 nodes. Mix 1/3 organic matter with 2/3 soil, plant the cuttings, and water immediately to create a suitable watering pit after settling.

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