Landscape Plants of the Upper Midwest

Thunberg Spirea

{Picture of Thunberg Spirea}
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Plant Information

  • Plant Type: Shrub: Medium
  • Scientific Name: Spiraea thunbergii Play audio of plant name
  • Family: Spirea
  • Zone: 4
  • Plant Size: 4-5'
  • Bloom Time: Spring
  • Bloom Color: White
  • Habit: Mounded: spreading
  • Culture:

    Very adaptable. Full sun to partial shade.

  • Notes:

    A heavy display of white flowers in early spring are accentuated by slender arching stems, giving an overall graceful appearance. It looks best if heavily pruned just after flowering each year.

  • Pruning:Pruning animation

    Renewal pruning is accomplished by removing the largest, oldest stems (generally 1/4 to 1/3 of the total stems) as close to the ground as possible. This will stimulate new shoots to develop below the cuts which will fill in the plant creating a more dense and pleasing habit.

    Renewal pruning should be done when the plant is dormant, late fall to early spring.

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Landscape Plants of the Upper Midwest
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Contact
Bill Hoch, Associate Professor
Montana State University
E-mail: bhoch@montana.edu

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