Deciduous & Flowering Shrubs

Snowball viburnum

Viburnum opulus 'Roseum'

Snowball viburnum forms a dense, arching shrub that fills with rounded flower clusters in spring. The blooms open green-white, turn white, and can age pinkish; this sterile cultivar is not expected to fruit. In Southwest Washington, give it full sun to partial shade and average to moist, well-drained soil with steady moisture. Plan for about 10–12 feet of height and 10–14 feet of width at maturity, leaving space for the branches to spread. Its scale suits a specimen planting, flowering hedge, mixed border, or screen. Shape after flowering when needed, and maintain airflow through the shrub.

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At a glance

Mature height
About 10–12 ft
Mature spread
About 10–14 ft
Light
Full sun to partial shade
Hardiness
About USDA Zone 4

The right plant, the right place

Make room for something good.

Its rounded spring flowers suit a specimen planting or mixed border. The dense, arching growth can also form a flowering hedge or screen.

Where to plant

Leave roughly 12 feet or more for its spread, and avoid crowding nearby plants. Choose full sun to partial shade.

Through the seasons

Rounded spring flower clusters open green-white, turn white, and may age pinkish. This sterile cultivar is not expected to produce fruit.

Southwest Washington gardens

Give it a good start.

In Southwest Washington, provide drainage and air movement. Monitor for powdery mildew, viburnum leaf beetle, and leaf spotting.

Soil, drainage & water

Plant in average to moist, well-drained soil. Keep moisture consistent, especially while the shrub becomes established.

A little care goes a long way

Growing well, season after season.

Prune after spring flowering if shaping is needed. Maintain air movement through the branches and check foliage for disease or insect damage.

Know what to look for

Common growing concerns.

Symptoms can have more than one cause. These notes are a starting point for observing your plant and improving its growing conditions.

Powdery mildew

A white, powdery coating on leaves.

Help your plant thrive

Allow air movement, monitor foliage, and follow local guidance before treatment.

Viburnum leaf beetle

Chewed or skeletonized leaves.

Help your plant thrive

Inspect leaves regularly and use local pest guidance if feeding appears.

Bacterial blight or leaf spot

Spotted or blighted leaves.

Help your plant thrive

Avoid crowding, remove affected fallen leaves, and monitor new growth.

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Let’s find the right plant
for your place.

Ask our team about plant selection and current availability.

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