Viburnum opulus �Sterile�, commonly known as Snowball Tree, is a deciduous shrub valued for its ornamental flowers and foliage, forming a rounded, bushy habit. The plant produces large, round clusters of sterile white flowers in late spring to early summer, which lack fruit but create an attractive floral display. It is commonly used in garden borders, hedging, and as a specimen shrub, appreciated for its decorative structure, seasonal interest, and low maintenance requirements.