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Description of Rhododendron 'Peter Koster'

R. 'Peter Koster' 
Photo by: Steve Henning

Seed Parent x Pollen Parent: 

George Hardy x Doncaster hybrid 

Predominant Flower Color: 


Flower / Truss Description: 

Flower broadly funnel-shaped, 2" across, rosy crimson, paler at edges, inconspicuously marked dark brown at base of dorsal lobe. Truss has about 16 flowers. 



Bloom Time: 

Midseason to Late Midseason 

Height (ft.) in 10 Yrs: 

Cold Hardiness Temperature: 

-5F  (-21C)

Foliage Description / Plant Habit: 

Leaves obovate, 3" to 4" long, flat, deep green, with thin brown indumentum below. 

Elepidote (E) or Lepidote (L): 


Koster & Sons 

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
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