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More Information: Rhododendron 'Koster's Brilliant Red'


R. 'Koster's Brilliant Red' 
  Photo: Tijs Huisman

Predominant Flower Color:  Orange

Flower/Truss Description:  Flower funnel-shaped, 2½" across, moderate reddish orange, with orange spotting. Multiple clones sold in the trade.

Fragrant:  No

Bloom Time:  Early Midseason to Midseason

Foliage Description / Plant Habit:  Leaves ovate to elliptic, slighty glossy, dark green, turning bright orange and red in autumn, deciduous. Upright plant habit.

Deciduous or Evergreen:  Deciduous

Height:  5 feet in 10 years.

Cold Hardiness Temp:  -10°F  ( -23°C)

Parentage  (Seed Parent x Pollen Parent): 
   molle ssp. molle x molle ssp. japonicum

Hybridized or Selected by:  Koster & Sons

Registration Reference:  RHS 58

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.


American Rhododendron Society
P.O. Box 43, Craryville, NY 12521
Ph: 631-533-0375   E-Mail: member@arsoffice.org
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