Shrubs are a must-have for gardens, and the Snowball Viburnum is one of our favorites. Its showy, white, 5-8 in. flowerheads add charm in early summer and seem to glow in the moonlight. The non-fragrant flowers emerge lime green and turn a snowy white, and attract butterflies. A native of China, Snowball Viburnum has dark green, ovate leaves. It's a deciduous shrub in northern climates, and can be semi-evergreen in warmer grow zones. Growing 6-10 ft. tall with a similar spread, this shrub has a rounded, vase-shaped habit. It's a top choice for growing as a flowering hedge, backdrop for perennials or as a privacy screen. It tolerates a wide range of soils. For best results, plant in well-drained, acidic loamy soil in full sun to partial shade. Zones 6-9.