Photo by Melody

PlantFiles: Corkscrew Flower
Strophanthus speciosus

Family: Apocynaceae (a-pos-ih-NAY-see-ee) (Info)
Genus: Strophanthus (stroh-FAN-thus) (Info)
Species: speciosus (spee-see-OH-sus) (Info)

One vendor has this plant for sale.

6 members have or want this plant for trade.

Tropicals and Tender Perennials

over 40 ft. (12 m)

Unknown - Tell us

USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun

Seed is poisonous if ingested
Parts of plant are poisonous if ingested

Bloom Color:
Pale Yellow

Bloom Time:
Mid Spring
Late Spring/Early Summer
Mid Summer


Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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to view:

By RWhiz
Thumbnail #1 of Strophanthus speciosus by RWhiz

By pongsak
Thumbnail #2 of Strophanthus speciosus by pongsak

By palmbob
Thumbnail #3 of Strophanthus speciosus by palmbob

By palmbob
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Thumbnail #5 of Strophanthus speciosus by palmbob


No positives
1 neutral
No negatives

Gardeners' Notes:

Neutral lucas13 On May 1, 2011, lucas13 from Victoria
Australia wrote:

Strophanthus speciosus is also known as Poison Rope.
Native to southern Africa.

As the common name poison rope suggests it contains toxic compounds.
These are in the form of cardiac glycosides, similar to those found in Digitalis.

Native hunters used preparations made from the seeds as a virulent arrow poison.


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

Spring Valley, California

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