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Description of Rhododendron thomsonii ssp. thomsonii

R. thomsonii 
Photo by: Kenneth Cox

Predominant Flower Color: 

Red 

 Flower / Truss Description: 

Campanulate, crimson to deep wine-red, fleshy, calyx conspicuous. Lax truss holds 3-12 flowers. 

Fragrant: 

No  

Bloom Time: 

Early Midseason 

Height (ft.) in 10 Yrs: 

Cold Hardiness Temperature: 

5F (-15C)

Foliage Description: 

Leaves orbicular or ovate to elliptic, 2" to 4" long. 

Elepidote (E) or Lepidote (L): 

 

Plant Habit: 

Upright shrub or small tree 

Sub Genus: 

Hymenanthes 

Section: 

Ponticum 

Sub Section: 

Thomsonia 

Geographical Origin: 

Nepal, India (Sikkim, Arunachal Pradesh), China (S Tibet), Bhutan 

 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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