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Plant care

Rivieri Voodoo Lily (umbrella arum) care

Amorphophallus rivieri

Also called rivieri voodoo lily, umbrella arum.

RHS H3USDA 7b-10Toxic to petsIndoor Leaf reaches 0.8-1.5 m tall with a canopy spread of up to 1 m

Watering rhythm

Bright indirect light (just back from a sunny window)

Keep evenly moist during active leaf growth, watering when the top 2-3 cm of soil dries; stop almost entirely once the leaf yellows and dies back.

Light

Bright indirect light (just back from a sunny window)

Soil

Rich, loose, free-draining loam high in organic matter

Humidity

50-70%

Temp

18-30°C

Pet safety

Toxic to pets

Mature size

Leaf reaches 0.8-1.5 m tall with a canopy spread of up to 1 m

Care at a glance

Light

In the wild rivieri voodoo lily grows on the bright edge of a forest canopy, not in the canopy and not in the open. Indoors, that translates to within a metre of an unobstructed window, sheer curtain optional. Bright dappled or filtered light suits the leaf best; the single canopy leaf scorches in harsh midday sun. Outdoors it thrives in light woodland shade with a few hours of gentle morning sun. The fastest test: a hand held at the leaf casts a soft-edged shadow at noon — sharp shadow means too much sun, no shadow means too little light.

Watering

Aim for keep evenly moist during active leaf growth, watering when the top 2-3 cm of soil dries; stop almost entirely once the leaf yellows and dies back. for rivieri voodoo lily, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Water generously through the spring-to-autumn growth phase, but never let the tuber sit waterlogged. As the leaf collapses in autumn the tuber goes dormant — withhold water and keep the corm barely moist to dry until new growth pushes.

Soil and pot

Rivieri Voodoo Lily grows best in rich, loose, free-draining loam high in organic matter. A deep, fertile mix of loam, compost and grit holds moisture for the hungry leaf while letting excess drain away from the tuber. Sharp drainage in the dormant season is essential to prevent corm rot. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Rivieri Voodoo Lily sits happiest at around 50-70% humidity and 18-30°C (64-86°F). Appreciates moderate to high humidity while in leaf, reflecting its tropical-to-subtropical Asian woodland origins. Average outdoor summer humidity is fine; very dry indoor air can brown the leaf margins. If you keep the room above 18 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed rivieri voodoo lily sparingly. Feed every 2-3 weeks through active growth with a balanced liquid fertiliser, shifting to a higher-potassium feed late in the season to bulk up the tuber. Stop feeding once the leaf begins to yellow and the plant enters dormancy. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on rivieri voodoo lily in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Tuber rot in dormancyWet, cold compost during the winter rest is the commonest killer. Store the lifted corm dry, or ensure razor-sharp drainage if left in the ground.
  • Pungent flower odourThe bloom emits a strong carrion smell for a day or two to attract fly pollinators — expected, not a fault. Site away from doors and seating, or grow purely for the foliage.
  • Leaf scorchBrown, crisped leaf margins follow harsh direct sun or very dry air. Move to filtered light and raise humidity around the single canopy leaf.
  • No flower for several yearsYoung or undersized tubers leaf without blooming. The corm must reach sufficient size and store enough energy before it flowers, so feed well and be patient.

Propagation

Propagate by offsets (small daughter tubers) lifted during winter dormancy, or by potting up the bulbils that sometimes form where the leaf divisions meet the petiole. Seed from a pollinated flower is possible but slow to reach flowering size. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Rivieri Voodoo Lily is toxic to pets. The ASPCA does not list this species individually, but it is an aroid (Araceae) and, like the ASPCA-listed relatives in this family, the tuber, stems and leaves contain insoluble calcium oxalate raphides. Chewing causes intense oral burning, drooling, pawing at the mouth, vomiting and difficulty swallowing in cats and dogs. Treat as toxic and keep away from pets. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Rivieri Voodoo Lily care — frequently asked questions

What is the common name for Amorphophallus rivieri?

Amorphophallus rivieri is most commonly called Rivieri Voodoo Lily, but it is also known as rivieri voodoo lily, umbrella arum. The names refer to the same species, so care instructions for Rivieri Voodoo Lily apply identically to anything sold as umbrella arum.

How much light does rivieri voodoo lily need?

Rivieri Voodoo Lily grows best in bright indirect light (just back from a sunny window). Bright dappled or filtered light suits the leaf best; the single canopy leaf scorches in harsh midday sun. Outdoors it thrives in light woodland shade with a few hours of gentle morning sun.

How often should I water rivieri voodoo lily?

Water rivieri voodoo lily keep evenly moist during active leaf growth, watering when the top 2-3 cm of soil dries; stop almost entirely once the leaf yellows and dies back.. Water generously through the spring-to-autumn growth phase, but never let the tuber sit waterlogged. As the leaf collapses in autumn the tuber goes dormant — withhold water and keep the corm barely moist to dry until new growth pushes. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is rivieri voodoo lily toxic to cats and dogs?

Rivieri Voodoo Lily is toxic to pets. The ASPCA does not list this species individually, but it is an aroid (Araceae) and, like the ASPCA-listed relatives in this family, the tuber, stems and leaves contain insoluble calcium oxalate raphides. Chewing causes intense oral burning, drooling, pawing at the mouth, vomiting and difficulty swallowing in cats and dogs. Treat as toxic and keep away from pets.

What USDA hardiness zone does rivieri voodoo lily grow in?

Rivieri Voodoo Lily is rated for USDA zone 7b-10 (lift or heavily mulch the tuber where frost penetrates) and RHS hardiness H3. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Rivieri Voodoo Lily deep-dive guides

Every aspect of rivieri voodoo lily care, each with its own calibrated guide:

Featured in these plant shortlists

Rivieri Voodoo Lily qualifies for 3 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Rivieri Voodoo Lily is also commonly called rivieri voodoo lily or umbrella arum.