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Description of Rhododendron 'Senator Henry Jackson'

R. 'Senator Henry Jackson' 
Photo by: Don Smart

Seed Parent x Pollen Parent: 

degronianum ssp yakushimanum x Mrs Horace Fogg 

Predominant Flower Color: 


Flower / Truss Description: 

Flower white. Held in ball-shaped trusses. 



Bloom Time: 

Late Midseason 

Height (ft.) in 10 Yrs: 

Cold Hardiness Temperature: 

-5F  (-21C)

Foliage Description / Plant Habit: 

Leaves convex, dark green, with sparse white indumentum. 

Elepidote (E) or Lepidote (L): 



Registration Reference: 

not registered 

 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:
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