Snowball Viburnum is a must have for gardeners in search of awe inspiring spring blooms! This shrub erupts with round white flower clusters each spring; true to its name, these blooms resemble perfect snowballs. Flowers emerge in shades of light green and quickly mature to crisp white. In warmer zones, this shrub is also considered to be semi-evergreen. Great for use as a specimen and can be pruned into more of a tree-form shape if so desired.