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More Information: Rhododendron 'Black Widow'


R. 'Black Widow' 
  Photo: Harold Greer

Predominant Flower Color:  Red

Flower/Truss Description:  Flower openly funnel-shaped, about 3¼" across, wavy edges, opens dark grayish purple aging to darker than dark red with a dark speckled eye. Ball-shaped truss holds 19-21 flowers.

Fragrant:  No

Bloom Time:  Midseason

Foliage Description / Plant Habit:  Leaves elliptic, broadly acute apex, cuneate base, 6½" long, glossy, bullate. Upright and spreading habit

Height:  3 feet in 10 years.

Cold Hardiness Temp:  -5°F  ( -21°C)

Parentage  (Seed Parent x Pollen Parent): 
     (Frank Galsworthy x Leo) x Warlock

Elepidote (E) or Lepidote (L):  E

Hybridized or Selected by:  Thompson

Registration Reference:  ARS 072

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.


American Rhododendron Society
P.O. Box 43, Craryville, NY 12521
Ph: 631-533-0375   E-Mail: member@arsoffice.org
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