Landscape Plants of the Upper Midwest

Columnar Glossy Buckthorn

{Picture of Columnar Glossy Buckthorn}
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Plant Information

  • Scientific Name: Frangula alnus 'Columnaris' Play audio of plant name
  • Family: Buckthorn
  • Parent: Frangula alnus
  • Related Cultivars:

    Frangula alnus 'Asplenifolia'

  • Zone: 4
  • Plant Size: 12-15'
  • Habit: Columnar
  • Culture:

    Very adaptable. Full sun to partial shade.

  • Notes:

    A rapid growing cultivar of narrow upright habit.  It’s 3-4’ mature width makes it useful for screen plantings where space is limited.  This species (formerly referred to as Rhamnus frangula) has become an invasive weed and is now prohibited in many areas:

    In Wisconsin this plant is regulated as a Restricted Invasive weed that cannot be transported, transferred, or introduced without a permit.  To view the complete regulation see: Wisconsin Invasive species rule – NR 40

     In Minnesota this plant is regulated as a Restricted Noxious weed and may not be sold or transported without a permit, or intentionally planted.  To view the complete regulation see Minnesota Noxious Weed Law

  • 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
Feedback/Questions

Contact
Bill Hoch, Associate Professor
Montana State University
E-mail: bhoch@montana.edu

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