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More Information: Rhododendron 'Mrs Helen Koster'


R. 'Mrs Helen Koster' 
  Photo: Harold Greer

Predominant Flower Color:  White

Flower/Truss Description:  Flower star shaped, pale lilac white, with a large purplish red blotch.

Fragrant:  No

Bloom Time:  Late Midseason

Foliage Description / Plant Habit:  Leaves narrowly elliptic, acute apex, convex, deep green.

Height:  5 feet in 10 years.

Cold Hardiness Temp:  -5°F  ( -21°C)

Parentage  (Seed Parent x Pollen Parent): 
     Mrs J.J. Crosfield x Catawbiense Grandiflorum

Elepidote (E) or Lepidote (L):  E

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.


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