Typhonium venosum (Voodoo Lily) care

Light

Bright but filtered. Typhonium venosum burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. The leaf phase wants bright, dappled or indirect light, similar to a woodland edge. Full midday sun scorches the single large leaf; deep shade weakens the tuber and reduces next year's flowering. If you only have a south window, set the plant back 1.5 m or hang a sheer curtain — both knock the intensity down into the right range.

Watering

Watering typhonium venosum: water regularly while the leaf is in growth; keep the tuber dry during dormancy. The number that matters isn't the day of the week — it's how dry the top 2-3 cm of the pot feels. A finger in the soil tells you more than a watering app. After every watering, tip the saucer. Once the leaf appears, keep the soil evenly moist through the growing season. As the leaf yellows in autumn, taper off and store the tuber nearly dry until it reblooms or re-leafs.

Soil and pot

Typhonium venosum grows best in rich, free-draining loamy mix. Plant in a fertile, humus-rich but well-drained potting mix with added grit or perlite. The tuber rots in cold, wet soil, so sharp drainage during dormancy is essential. 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

Typhonium venosum sits happiest at around 40-60% humidity and 16-27°C (60-80°F). Average humidity suits the leaf phase. The flower needs no special humidity and can bloom from a bare dormant tuber; the leaf simply prefers it not too dry. If you keep the room above 16 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 typhonium venosum sparingly. Feed every 2-4 weeks with a balanced liquid fertiliser only while the leaf is actively growing; do not feed the dormant tuber. 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 typhonium venosum in the Growli community. Each is annotated with the most common cause so you know where to start.

• Foul carrion odour — The open spathe smells of rotting meat for a day or two to lure flies; this is normal — ventilate the room or move the pot outside while it blooms.
• Tuber rot — Cold, wet soil during dormancy rots the tuber; store it nearly dry and use a gritty, free-draining mix when potting.
• No flower — Small or immature tubers skip flowering; grow on for a season or two and feed the leaf well to build a tuber large enough to bloom.
• Leaf scorch — Direct sun browns the single large leaf; provide bright but filtered light during the growing season.

Propagation

Lift and separate offset tubers (cormlets) during dormancy and pot them individually. Mature tubers can also be left to flower and re-leaf; seed is possible but slow and rarely needed. 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

Typhonium venosum is toxic to pets. Toxic to cats and dogs. As an aroid (Araceae), Typhonium venosum contains insoluble calcium oxalate crystals; it is not individually listed by the ASPCA, but the family's well-documented oxalate toxicity causes oral burning, drooling, vomiting and difficulty swallowing. Treat the tuber and all plant parts as toxic to 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.

Typhonium venosum deep-dive guides

Every aspect of typhonium venosum care, each with its own calibrated guide:

• Typhonium venosum watering schedule
• Typhonium venosum light requirements
• Best soil mix for typhonium venosum
• Typhonium venosum fertilizing guide
• When to repot typhonium venosum
• How to propagate typhonium venosum
• Typhonium venosum growth rate & size
• Typhonium venosum cold hardiness
• Typhonium venosum temperature & humidity
• Is typhonium venosum toxic to cats & dogs?
• Is typhonium venosum toxic to cats?
• Is typhonium venosum toxic to dogs?

Featured in these plant shortlists

Typhonium venosum qualifies for 2 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best plants for a north-facing window — Houseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
• Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Typhonium venosum is also commonly called Voodoo Lily or Devil's Tongue.

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• All 2464 plant care guides in the Growli library