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Description of Rhododendron 'Roseum Superbum'

R. 'Roseum Superbum' 
Photo by: Sally and John Perkins

Seed Parent x Pollen Parent: 

catawbiense hybrid 

Predominant Flower Color: 

Lavender 

Flower / Truss Description: 

Flower purplish-rose. Dome-shaped truss. 

Fragrant: 

No 

Bloom Time: 

Late Midseason 

Height (ft.) in 10 Yrs: 

Cold Hardiness Temperature: 

-20F  (-29C)

Foliage Description / Plant Habit: 

Leaves elliptic, medium green. Exhibits good heat and cold tolerance. 

Elepidote (E) or Lepidote (L): 

Hybridizer: 

Waterer, A. 

Registration Reference: 

RHS 58 

 Note: Bloom time and 10 year height information are approximate and can vary dependent on local climate and soil conditions.
Hardiness temperature is also an approximate guideline.


American Rhododendron Society
Executive Director: P.O. Box 525,  Niagara Falls, NY 14304
Ph: 416-424-1942   Fax: 905-262-1999   E-Mail: lauragrant@arsoffice.org
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