Viburnum Opulus Roseum Is Commonly Known As Snowball Trees. These Viburnum Shrubs Bear Round Clusters Of Sweetly Scented White Flowers That Resemble Snowballs And Give The Plants Their Common Name. The Flowers Of Viburnum Opulus Roseum Are Sterile So These Shrubs Won’t Produce Berries. The Green Leaves Of Viburnum Turn To Shades Of Russet And Purple In Autumn.this Viburnum Has Been Given The Rhs Award Of Garden Merit As An Excellent Garden Plant.grow Viburnum Opulus Roseum In Any Moderately Fertile