Chinese snowball is one of spring's showiest shrubs. White flower clusters 6 to 8 inches across festoon its branches in late spring. The plant gets big—12 to 20 feet tall and wide. Though it looks like a hydrangea, it's actually a viburnum.
Snowball Viburnum Bush - Viburnum. "Few plants have flowers this large... and you'll get hundreds of them on each bush! Bright white blooms look like cheerleader pom-poms. You'll get flowers in mid spring that last through early summer." Zone 4-8, H 10-20 ft, W 10-20 ft. by lakisha