 | Eastern Snowball Viburnum. The Eastern Snowball Viburnum (Viburnum opulus 'Sterile') is a hardy, deciduous shrub with mammoth Hydrangea-like mophead blooms! Able to reach fairly large sizes quickly, this impressive shrub will command attention in the landscape! The showy flowers will look great in an arrangement and attract butterflies, but will not set messy fruit. If the wonderfully green leaves and impressive size aren't enough, just wait for the flowers! Many clusters of large, pure-white snowball-like flowers cover this... - Eastern Snowball Viburnum. |