Rhododendron 'Hugh Koster'

 
Photo: Odo Tschetsch
Deutsche Genbank Rhododendron

Predominant Flower Color: 

 Red 

Flower / Truss Description: 

 Flower funnel-shaped, about 3" across, glowing crimson scarlet, with black spots on dorsal lobe. Ball-shaped truss has up to 16 flowers. 

Fragrant: 

 No 

Bloom Time: 

 Midseason to Late Midseason 

Foliage Description / Plant Habit: 

 Leaves about 4¾" long, concave, wavy edged, glossy, dark green. Plant has stiff, upright branches. Prefers some shade to avoid leaf burn. 

Height in 10 Yrs: 

 5 ft 

Cold Hardiness Temperature: 

 5°F  (-15°C)

Parentage  (Seed Parent x Pollen Parent): 

 George Hardy x Doncaster hybrid  

Elepidote (E) or Lepidote (L): 

 E 

Hybridized or Selected by: 

 Koster & Sons 

Registration Reference: 

 RHS 58 

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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