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More Information: Rhododendron 'Hardgrove's Royal Star'


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

Predominant Flower Color:  Red

Flower/Truss Description:  Flower openly funnel-shaped, wavy edges, 2" to 2½" across, inside moderate purplish-red with dark purple blotch, outside deep purplish red. Dome-shaped truss holds 16 flowers.

Fragrant:  No

Bloom Time:  Late

Foliage Description / Plant Habit:  Leaves elliptic, slightly recurved, broadly acute apex, rounded base, 3½" to 4½" long, semi-glossy, dark yellowish-green, retained 2 years. Plant upright, well branched, somewhat open habit.

Height:  6 feet in 10 years.

Cold Hardiness Temp:  -15°F  ( -26°C)

Parentage  (Seed Parent x Pollen Parent):  Moser's Maroon x unknown

Elepidote (E) or Lepidote (L):  E

Hybridized or Selected by:  Hardgrove

Registration Reference:  ARS 982

Glossary of plant description terminology.
Note: Bloom time and 10 year height information are approximate and can vary dependent on weather and growing conditions.
Cold hardiness temperature is also an approximate value.


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