The Stapelia grandiflora, known as the Giant Toad Plant, is renowned for its unique star-shaped Stapelia flowers, which exhibit both beauty and intrigue. The Giant Toad Plant is often referred to as the Carrion Flower due to the scent of its blooms, which mimic decaying flesh. Despite its unusual floral odor, the plant is prized for its striking starfish-like flowers and is a conversation starter in any garden or indoor collection.  

Native to South Africa, it has several other common names such as starfish flower, starfish cactus, Giant zulu, or Carrion flower. Its ability to thrive with minimal care adds to its appeal for both beginners and experienced gardeners. 

The Stapelia grandiflora is a fast-growing, clump-forming succulent with fleshy, four-angled stems that are green to bluish-green in color.

These stems often feature small, soft teeth along their edges.  It typically grows up to 12 inches tall, with clumps spreading up to 18 inches wide.

Its compact size makes it an excellent choice for container gardening, rock gardens, or as a focal point in a succulent arrangement. 

The Stapelia grandiflora flowers are its crown jewel. The star-shaped blooms are velvety in texture, with colors ranging from reddish-brown to maroon, often with lighter markings that enhance their beauty.

While the scent is reminiscent of decaying matter, it plays a crucial role in attracting flies for pollination. The flowers are a marvel of nature, with their intricate patterns and textures that mimic carrion to perfection. 

When it comes to care, it thrives in bright, indirect light to the full sun, though it benefits from some shade during the hottest parts of the day.

It prefers well-draining specialized succulent soil to prevent root rot. In the spring and summer, during the growing season, water your plant deeply but allow the soil to dry out completely between waterings. Fertilize with a diluted, low-nitrogen fertilizer once a year during the actively growing period.

When growing indoors, it prefers warm temperatures and does best when kept between 70-85°F.

In outdoor settings, it is suitable in USDA zones 9-11, where winters are mild.

Avoid overwatering in cooler months, as the plant becomes dormant and requires minimal moisture. 

The Giant Toad Plant can be propagated through stem cuttings.

Allow the cuttings to dry and callous for several days before planting them in well-draining soil.

Keep the cuttings in a warm, shaded area and water sparingly until roots develop. Once established, they can be transplanted into individual containers or garden beds. 

According to the ASPCA, Stapelia grandiflora is considered non-toxic to humans, cats, dogs, and other pets. This makes it a safe choice for households with animals, provided the unusual scent of the flowers does not deter indoor placement. 

Key Takeaways

The Bottom Line

Overall, the Stapelia grandiflora is a botanical marvel, combining stunning aesthetics with fascinating ecological adaptations. Its unique starfish-like flowers and resilience in challenging conditions make it a standout choice for succulent enthusiasts. While its scent may be unconventional, the beauty and intrigue of this plant more than compensate. Whether in a rock garden or as part of an indoor collection, the Giant Toad Plant is a conversation piece that never fails to impress.