Few shrubs in May command attention the way 'Roseum' does. The flowers open lime-green, age to white, and then blush faintly pink before they finish, and the whole process plays out in spherical clusters that can stretch 3 inches across, crowding every branch of a shrub that may reach 12 feet with a 15-foot spread. It is, by any measure, a spectacle. The fact that it has been grown in European gardens since the sixteenth century says something about the kind of dependable ornamental impact that outlasts trends.

The leaves are maple-shaped and turn reddish-orange in autumn, carrying the display into a second season. Because all flowers are sterile, no fruit is produced, which suits gardens where fruiting viburnums would cause a mess, though it also means no wildlife benefit. Plant in moist, well-drained loam in full sun to partial shade. It tolerates other soil types reasonably well. Use it as a specimen where scale allows, or anchor a large shrub border with it. Deer tend to leave it alone.