Landscape Plants of the Upper Midwest

Royal Azalea

{Picture of Royal Azalea}
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Plant Information

  • Scientific Name: Rhododendron schlippenbachii Play audio of plant name
  • Family: Azalea
  • Parent: Rhododendron (Azalea) species and hybrids
  • Related Cultivars:

    Rhododendron x 'Gibraltar'
    Rhododendron x 'Toucan'
    Rhododendron dauricum 'Madison Snow'
    Rhododendron mucronulatum 'Cornell Pink'
    Rhododendron prinophyllum
    Rhododendron x 'Jane Abbott'
    Rhododendron x Northern Lights

  • Zone: 4
  • Plant Size: 5-6'
  • Habit: Upright Oval
  • Culture:

    Rhododendrons in bloom are among the most striking and beautiful of all plants. They are however, fastidious about their cultural requirements: 1

  • Notes:

    Large rose-pink fragrant flowers. The attractive foliage is whorled on the branches and develops a pleasing red-orange fall color. Hardy to approximately -30¡F. Deciduous.

  • Rhododendrons :

    Rhododendrons are commonly divided into two general groups: 1. Azaleas, which are mainly deciduous with funnel-shaped flowers contained 5 stamens 2. Rhododendrons, which are mainly evergreen with bell-shaped flowers containing 10 or more stamens.

  • 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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