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More Information: Rhododendron 'Shamrock'


R. 'Shamrock' 
  Photo: Eleanor Philp

Predominant Flower Color:  Yellow

Flower/Truss Description:  Flower tubular funnel-shaped, 1½" across, brilliant yellowish green with slight strong yellow-green spotting. Flowers fade to light yellow. Flat truss has 8-9 flowers.

Fragrant:  No

Bloom Time:  Early to Early Midseason

Foliage Description / Plant Habit:  Leaves elliptic, apiculate apex, cuneate base, 1¾" long, yellowish-green, retained 2 years. Dense and spreading shrub.

Height:  2 feet in 10 years.

Cold Hardiness Temp:  -5°F  ( -21°C)

Parentage  (Seed Parent x Pollen Parent): 
     keiskei, dwarf form x hanceanum 'Nanum group'

Elepidote (E) or Lepidote (L):  L

Hybridized or Selected by:  Ticknor

Registration Reference:  ARS 784

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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