Spiraea nipponica 'Snowmound' - 2 Gallon Potted ShrubsSpiraea nipponica, or Snowmound Spiraea, is a drought tolerant, flowering, deciduous shrub growing rapidly to its full size. For most Spiraea species, the height can range from 5 to 8 feet high and an equal spread; however, Snowmound tends to be a bit smaller with a 2 to 4 foot height. When young it is a slender, slightly arching, shrub, but becomes denser and mounded with age. It grows well in average, medium moisture, well drained soils in full sun