Rhododendron 'Thumbs Up'

 
Photo: Tom Ahern

Predominant Flower Color: 

 White 

Flower / Truss Description: 

 Flower openly funnel-shaped, 3" across, inside ivory white with a small maroon basal blotch and spots on the dorsal lobe, outside initially pink aging to ivory white with pink midribs. Lax truss has 8 flowers. 

Fragrant: 

 No 

Bloom Time: 

 Midseason 

Foliage Description / Plant Habit: 

 Leaves oblong, broadly acute apex, rounded base, flat margins, 3½" long, semi-glossy, deep green. Leaves retained 3 years. Dense growth habit. 

Height in 10 Yrs: 

 2 ft 

Cold Hardiness Temperature: 

 -5°F  (-21°C)

Parentage  (Seed Parent x Pollen Parent): 

 Mary Belle x pseudochrysanthum  

Elepidote (E) or Lepidote (L): 

 E 

Hybridized or Selected by: 

 Ahern 

Registration Reference: 

 ARS 042
Note: This cultivar is not commercially available. 

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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