Spiraea nipponica 'Snowmound'
Common name: 
Snowmound Spirea
sp-i-REE-a nip-PON-i-ka
S. n. var. tosaensis ‘Snowmound’
Native to (or naturalized in) Oregon: 
  • Deciduous shrub, 3-5 ft (0.9-1.5 m) tall, equal width, upright, rigid form, rounded.  Leaves simple, alternate, 2-4 cm long, elliptic to obovate, toothed at rounded apex, bluish green.  Flowers white, 6 mm, in rounded clusters, cover branches in May-June.
  • Sun to part shade, does best in well-drained soil with moderate to high levels of moisture. Prune older stems to the ground to thin and rejuvenate.
  • Sun to part shade, some consider it a superior replacement for Spiraea × vanhouttei.
  • Hardy to USDA Zone 3      Native to the island of Shikoku, Japan.
  • Oregon State Univ. campus: east side of parking lot east of Radiation Center.
Click image to enlarge
  • plant habit, flowering

    plant habit, flowering

  • plant habit, flowering

    plant habit, flowering

  • plant habit, before and at floweing

    plant habit, before and at floweing

  • flowering shoots

    flowering shoots

  • flower clusters and leaves

    flower clusters and leaves

  • leaves and flowers

    leaves and flowers

  • leafy shoots

    leafy shoots

  • leaves, comparison

    leaves, comparison