ARS Logo


Description of Rhododendron  'Sir Robert'

Photo by: Donald Voss

Seed Parent x Pollen Parent: 

(Glacier x Tama-giku) x Getsutoku 

 Predominant Flower Color: 


Flower / Truss Description: 

Flower openly funnel-shaped, wavy lobes, 3" across, pale purplish-pink with light purplish-pink throat, variously marked. Inflorescence usually 2 flowered. 

Bloom Time: 

Late Midseason 

Height (ft.) in 10 Yrs: 

Cold Hardiness Temperature: 

-10F  (-23C)

Foliage Description / Plant Habit: 

Leaves narrowly elliptic, acute apex, cuneate base, 2" long, flat, dark yellowish-green. Rounded with stiff upright branches. 

Deciduous or Evergreen: 




Registration Reference: 

ARS 832 

 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:
1998-2015, ARS, All rights reserved.