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Description of Rhododendron 'Humbolt Sunrise'

R. 'Humbolt Sunrise' 
Photo by: Don Wallace

Seed Parent x Pollen Parent: 

Else Frye x johnstoneanum 

Predominant Flower Color: 

Yellow 

Flower / Truss Description: 

Flower openly funnel-shaped, wavy lobes, 3" across, fragrant, pale yellow with vivid yellow blotch in dorsal throat, reverse blushed deep pink on distal half of lobes. Flat-shaped trusses hold 5-6 flowers. 

Fragrant: 

Yes 

Bloom Time: 

Early Midseason 

Height (ft.) in 10 Yrs: 

Cold Hardiness Temperature: 

15F  (-9C)

Foliage Description / Plant Habit: 

Leaves elliptic to lanceolate, acute with apiculus apex, cuneate base, curve towards tip, glossy, yellow green, retained for 2 years. Upright, broad growth habit. 

Elepidote (E) or Lepidote (L): 

Hybridizer: 

Braafladt 

Registration Reference: 

ARS 791 

 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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