Photo by Melody

PlantFiles: Rhododendron
Rhododendron 'Cosmopolitan'

Family: Ericaceae (er-ek-AY-see-ee) (Info)
Genus: Rhododendron (roh-do-DEN-dron) (Info)
Cultivar: Cosmopolitan
Hybridized by Hagen; Year of Registration or Introduction: 2005

» View all varieties of Azaleas and Rhododendrons

2 members have or want this plant for trade.


4-6 ft. (1.2-1.8 m)

Unknown - Tell us

USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Sun to Partial Shade

Unknown - Tell us

Bloom Color:

Bloom Time:
Mid Spring


Other details:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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By Kell
Thumbnail #1 of Rhododendron  by Kell

By Kell
Thumbnail #2 of Rhododendron  by Kell


No positives
2 neutrals
No negatives

Gardeners' Notes:

Neutral AnalogDog On Mar 10, 2008, AnalogDog from Mountlake Terrace, WA (Zone 8a) wrote:

I have this plant, which is about 3 years old, in a place that it heavily trafficed by my dogs. I am planning to move it soon, so maybe it will do better. It is about 2 feet tall at this time. It has not bloomed for me, I assume the constant trampling has done some damage.

Neutral Kell On Mar 23, 2006, Kell from Northern California, CA (Zone 9b) wrote:

As per The American Rhododendron Society:
"Flower openly funnel-shaped, 1 1/2" to 3" across, light purplish-pink fading to pale pink with dark red to deep purplish-pink markings. Held in conical-shaped trusses with 10-18 flowers."

Seed Parent x Pollen Parent: Cunningham's White x Vesuvius


This plant has been said to grow in the following regions:

Clarksboro, New Jersey
Mountlake Terrace, Washington

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