Landscape Plants of the Upper Midwest

Summersweet Clethra

{Picture of Summersweet Clethra}

Plant Information

  • Plant Type: Shrub: Small
  • Scientific Name: Clethra alnifolia Play audio of plant name
  • Family: Clethra
  • Related Cultivars:

    Clethra alnifolia 'Rosea'

  • Zone: 3
  • Plant Size: 3-5'
  • Bloom Time: Summer
  • Bloom Color: White
  • Habit: Upright Oval
  • Culture:

    Requires an acid soil with adequate moisture. Full sun to light shade.

  • Notes:

    Fragrant, white flowers from late July through early August and yellow fall color. A beautiful plant when its cultural requirements are met (moisture and soil pH). Does not perform well in the drought-prone summers of the Midwest.

  • 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.

© 2021, All Rights Reserved.
Landscape Plants of the Upper Midwest

Bill Hoch, Associate Professor
Montana State University

Design by Big Rose Web Design