Carrion Plant, Starfish Flower (Stapelia grandiflora)

The carrion plant (Stapelia grandiflora), also known as starfish flower or starfish cactus, is a fascinating succulent native to South Africa. A member of the Apocynaceae family (formerly Asclepiadaceae), it's grown for its bizarre, large, star-shaped flowers that emit a carrion-like odor to attract fly pollinators.

Description

Forms low, spreading clumps of 4-angled, fleshy, spineless stems (branches) 6–12 inches tall, green to reddish-purple in sun. Flowers are huge—up to 12 inches across—with five pointed, hairy, reddish-brown petals marked with yellow bands. The center is raised and wrinkled. Blooms appear in late summer to fall. The smell resembles rotting meat, strongest on warm, still days.

Growing Conditions

• Zones: 9–11 outdoors; excellent container plant elsewhere.
• Light: Bright light to full sun. Some afternoon shade in hottest climates.
• Soil: Extremely well-drained, gritty mix (cactus/succulent soil with extra perlite/pumice).
• Water: Water thoroughly when soil is completely dry during active growth (spring–fall). Keep nearly dry in winter.
• Temperature: Prefers 70–90°F (21–32°C); protect from frost.

Care & Maintenance

Repot every 2–3 years in spring. Feed once in spring with low-nitrogen cactus fertilizer. Propagate easily from stem cuttings (allow to callus 1–2 weeks). Handle gently—stems break easily.

Uses

Succulent collections, rock gardens, xeriscapes, and conversation-piece containers. The flowers are unforgettable—place where the odor won't offend (or where you can appreciate the pollination biology).

Potential Issues

Root rot from overwatering is the main threat. Mealybugs in leaf axils. Flower odor may be unpleasant indoors—move outside during bloom if needed.

A truly weird and wonderful succulent for the adventurous gardener.