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Description of Rhododendron 'Thomwilliams Group'

R. 'Thomwilliams Group' 
Photo by: Hank Helm

Seed Parent x Pollen Parent: 

thomsonii x williamsianum 

Predominant Flower Color: 


Flower / Truss Description: 

Flower campanulate, fleshy, deep rose pink or rose-magenta. Two different forms available. Loose truss holds about 6 flowers. 



Bloom Time: 

Early Midseason 

Height (ft.) in 10 Yrs: 

Cold Hardiness Temperature: 

-5F  (-21C)

Foliage Description / Plant Habit: 

Leaves rounded, dark green. Dense, round growth habit. 

Elepidote (E) or Lepidote (L): 


Magor, Aberconway 

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
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