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Description of Rhododendron 'Horizon Dawn'

R. 'Horizon Dawn' 
Photo by: Stuart Imrie

Seed Parent x Pollen Parent: 

(Hotei x Tropicana) x [degronianum ssp yakushimanum x (Alice Franklin x Virginia Scott)] 

Predominant Flower Color: 

Yellow 

Flower / Truss Description: 

Flower openly campanulate, of heavy substance, wavy edges, 3" across, pale yellow with brilliant yellow throat. Held in ball-shaped trusses of 12-14 flowers. 

Fragrant: 

No 

Bloom Time: 

Early Midseason 

Height (ft.) in 10 Yrs: 

Cold Hardiness Temperature: 

5F  (-15C)

Foliage Description / Plant Habit: 

Leaves elliptic to narrowly elliptic, convex, mucronate apex, cuneate base, 6" long, retained 2 years. 

Elepidote (E) or Lepidote (L): 

Hybridizer: 

Brockenbrough 

Registration Reference: 

ARS 922 

 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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