Rhododendron 'Joseph Whitworth'

 
Photo: Odo Tschetsch
Deutsche Genbank Rhododendron

Predominant Flower Color: 

 Purple 

Flower / Truss Description: 

 Flower broadly funnel-shaped, 3⅓" - 3⅔" across, maroon with darker spotting on all lobes. Ball shaped truss has 12-16 flowers. 

Fragrant: 

 No 

Bloom Time: 

 Late Midseason to Late 

Foliage Description / Plant Habit: 

 Leaves elliptic to oblong-obovate, 4" - 4¾" long, dull, dark green. Dense, well-branched plant habit. 

Height in 10 Yrs: 

 6 ft 

Cold Hardiness Temperature: 

 -5°F  (-21°C)

Parentage  (Seed Parent x Pollen Parent): 

 ponticum x unknown  

Elepidote (E) or Lepidote (L): 

 E 

Hybridized or Selected by: 

 Waterer, J. 

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.

 

American Rhododendron Society
©1998-2025, ARS, All rights reserved.