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Description of Rhododendron sidereum

R. sidereum 
Photo by: Rhododendron Species Foundation

Predominant Flower Color: 

White, Yellow 

 Flower / Truss Description: 

Oblique-campanulate, cream to yellow, with red basal blotch. Truss of 12-20 flowers. 

Fragrant: 

No  

Bloom Time: 

Midseason to Late Midseason 

Height (ft.) in 10 Yrs: 

Cold Hardiness Temperature: 

10F (-12C)

Foliage Description: 

Leaves narrowly elliptic to oblanceolate, up to 9" long, plastered silvery-white to fawn indumentum. 

Elepidote (E) or Lepidote (L): 

 

Plant Habit: 

Erect to rounded shrub or small tree 

Sub Genus: 

Hymenanthes 

Section: 

Ponticum 

Sub Section: 

Grandia 

Geographical Origin: 

NE Burma, China (N and W Yunnan) 

 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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