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Description of Rhododendron 'Hardgrove's Royal Star'

R. 'Hardgrove's Royal Star' 
Photo by: Richard Gustafson

Seed Parent x Pollen Parent: 

Moser's Maroon x unknown 

Predominant Flower Color: 

Red 

Flower / Truss Description: 

Flower openly funnel-shaped, wavy edges, 2" to 2" across, inside moderate purplish-red with dark purple blotch, outside deep purplish red. Dome-shaped truss holds 16 flowers. 

Fragrant: 

No 

Bloom Time: 

Late 

Height (ft.) in 10 Yrs: 

Cold Hardiness Temperature: 

-15F  (-26C)

Foliage Description / Plant Habit: 

Leaves elliptic, slightly recurved, broadly acute apex, rounded base, 3" to 4" long, semi-glossy, dark yellowish-green, retained 2 years. Plant upright, well branched, somewhat open habit. 

Elepidote (E) or Lepidote (L): 

Hybridizer: 

Hardgrove 

Registration Reference: 

ARS 982 

 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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