ARS Logo


Description of Rhododendron 'Crater Lake'

R. 'Crater Lake' 
Photo by: Loyd Newcomb

Seed Parent x Pollen Parent: 

augustinii 'Barto Blue' x Bluebird 

Predominant Flower Color: 


Flower / Truss Description: 

Flower flat saucer-shaped, wavy lobes, 2" across, brilliant violet. No markings. Held in inflorescences with 3 flowers. 



Bloom Time: 

Early Midseason 

Height (ft.) in 10 Yrs: 

Cold Hardiness Temperature: 

-5F  (-21C)

Foliage Description / Plant Habit: 

Leaves elliptic, acute apex, cuneate base, 1" to 2" long, yellowish colored, retained for 2 years. Plant has upright habit. New growth bronze yellow. 

Elepidote (E) or Lepidote (L): 



Registration Reference: 

ARS 763 

 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:
1998-2015, ARS, All rights reserved.