Chinese Snowball
Viburnum macrocephalum

Mature Height: 12 +
Growth Rate: Moderate to fast
Soil: Average, well-drained
Light Requirements: Sun/partial shade
Foliage: 2"-4" oval, oblong, light green
Flower/Fruit: Large clusters of rounded flowers in early spring, lime green changing to pure white
Pruning: None necessary but as un-pruned shrubs mature, flowers may begin to appear only at the upper portion of the shrub. To help combat this, remove some of the older limbs completely and cut a few back to 1/3. For a complete renewal, it can be cut back to the ground immediately after flowering but it is probable that you wont' get any flowers the following year.
Hardy to Zone 6

Viburnums are excellent shrubs for the landscape and they can become addictive. There are many varieties to choose from and each has their own distinct characteristics. This particular variety is quite the show-stopper with immense blooms (up to 8 inches) that are start out lime green and mature to pure white. A very early bloomer (mid to late March in my area). It can attain a height of over 10 feet in five or six years. A very dramatic shrub.