Viburnum opulus, commonly known as the "snowball bush," is a gorgeous deciduous shrub that produces large, snowball-shaped blooms in spring, and provides your lawn or garden with beautiful, thick, dark green foliage throughout the summer and fall. Pruning Viburnum opulus plants is not necessary unless the plant becomes diseased or overgrown. Generally, gardeners deadhead their snowball bushes only to keep them looking neat throughout the growing season, and prune them once a year to increase the plant's health, not to shape them.
Wear protective clothing such as gloves, to protect yourself from the stiff, rigid branches of the Viburnum opulus plant while pruning.
Clean your pruning shears with rubbing alcohol and a clean cloth before you prune each plant. Cleaning the pruning shears helps prevent the spread of disease (if present) from one shrub to another. Use only sharp shears.
Prune away any overgrown, scraggly growth by cutting the branch level with the rest the shrub.
Prune any diseased branches back to the ground. Treat the disease on the snowball bush to prevent further damage and to prevent the disease from spreading.
Remove from the base of the shrub and discard them. The clippings can easily cause grass and other plants around the base of the shrub to die.