How to Grow Starfish Flower
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Starfish Flower
Stapelia flavopurpurea
flowerStapelia flavopurpurea is a succulent flowering plant native to South Africa, known for its striking star-shaped flowers with mottled yellow and purple petals and a distinctive fetid odor that attracts carrion flies for pollination. The plant features fleshy, upright green stems with minimal leaves and produces spectacular blooms during summer months. It is a low-maintenance houseplant or container garden specimen popular among succulent enthusiasts.
When should you plant Starfish Flower in your zone?
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Example Starfish Flower timeline · Pittsburgh, PA (Zone 6b)
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Plant Starfish Flower
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Starfish Flower blooms
Around Aug 15≈ 120 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Zones 10-11; grows as a houseplant in cooler climates
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Establishment
4-6 weeksYoung plant develops compact, upright fleshy stems with minimal foliage
Keep soil barely moist; provide bright light; avoid overwatering which causes root rot
Vegetative Growth
3-4 monthsPlant forms multiple stems and branches, becoming more robust and clump-like
Water moderately when soil is completely dry; ensure excellent drainage; fertilize monthly with diluted succulent fertilizer
Pre-flowering
2-3 weeksStem tips develop prominent buds that gradually enlarge and change color
Maintain consistent bright light; reduce watering slightly; do not move or disturb plant
Flowering
3-4 weeks per bloom cycleLarge star-shaped flowers (2-4 inches) with yellow-purple mottled petals and hairy surfaces emerge; flowers emit a carrion-like odor
Do not move plant; allow flower flies to visit for natural pollination; maintain dry conditions; flowers last 1-2 weeks
Dormancy
2-3 months (fall-winter)Plant growth slows significantly; stems may appear less turgid; no new flower buds form
Drastically reduce watering to once monthly or less; move to cool location (50-60°F if possible); withhold fertilizer; allow rest period essential for next year's blooms
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Remove with cotton swab dipped in rubbing alcohol; spray with neem oil or insecticidal soap; isolate affected plant
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Increase humidity; spray with water; apply neem oil; ensure good air circulation
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Remove manually with soft brush; treat with horticultural oil or insecticidal soap
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Prevent through excellent drainage and sparse watering; repot in fresh soil if detected; remove affected roots
Uses
Exotic Container Garden Specimen
OrnamentalStapelia flavopurpurea is prized by succulent collectors and gardeners for its remarkable star-shaped flowers with intricate petal patterns. The unique form and dramatic seasonal blooms make it an excellent conversation-starting houseplant or patio container specimen. [source]
Pollinator Attraction
WildlifeThe plant's distinctive carrion odor attracts flies and other insects that serve as natural pollinators, making it a fascinating botanical specimen for observing fly pollination mechanisms. [source]
Propagation and Collection
CraftStapelia is popular among succulent hobbyists for propagation experiments and plant collecting. Its ease of vegetative propagation from cuttings makes it rewarding for gardeners learning succulent propagation techniques. [source]
Low-maintenance Houseplant
HouseholdRequiring minimal watering, no feeding during dormancy, and tolerance of indoor conditions, Stapelia flavopurpurea is ideal for busy gardeners or those new to houseplant care. [source]
Harvest Tips
Stapelia flavopurpurea is ornamental; harvest seeds after flowers fade and seed pods dry on the plant (2-3 months post-flowering). Collect papery seed pods and allow them to split naturally, or carefully open and collect fine seeds. Seeds have low viability and are challenging to propagate. Propagate more reliably from stem cuttings taken during growing season—allow cuts to callus for 1 week before planting in dry succulent mix.
Fun Facts
- 🌱 The distinctive foul odor mimics carrion or rotting flesh, attracting blow flies and flesh flies that pollinate the flowers. This 'sapromyophily' is a remarkable evolutionary adaptation found in several African succulent genera.
- 🌱 Despite their exotic appearance, Stapelia flowers are short-lived, typically opening for only 1-2 days before the petals curl and darken, returning to the plant.
- 🌱 In South Africa, several Stapelia species are occasionally visited by genuine carrion beetles attracted to the realistic stink, though the plant offers no nectar reward—a phenomenon called 'deception pollination.'
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