Voodoo lily care is mostly about matching the plant’s seasonal cycle: give it warmth and moisture while it is actively growing, then keep its dormant tuber relatively dry. “Voodoo lily” can refer to several aroid species, including plants in the genera Amorphophallus and Sauromatum, so exact timing varies. The guidance below suits commonly grown tuber-forming types; check the plant’s label when available. You’ll need a pot with drainage, a loose potting mix, and a spot with bright indirect light. Handle the tuber with gloves if you have sensitive skin, and keep the plant away from pets and children.
What You’ll Need
- A pot with several drainage holes, only slightly wider than the tuber; a saucer is useful indoors.
- Fresh, well-draining potting mix, such as two parts quality indoor potting mix and one part perlite or pumice.
- A clean trowel or gloves, and a watering can with a narrow spout.
- A warm location with bright, indirect light and ordinary household humidity.
- Balanced, water-soluble houseplant fertilizer for the active growing season.
Step-by-Step
- Identify the active season. A healthy tuber typically sends up a leaf, or sometimes a flower before the leaf, during its growing season. Many commonly sold voodoo lilies grow in spring and summer and rest in fall or winter, but the calendar depends on species and conditions. A bare pot does not automatically mean the tuber is dead: look for firmness and wait for signs of growth rather than watering on a fixed schedule.
- Choose a suitable pot and position. Use a pot with drainage holes, roughly 2–4 inches wider than the tuber. A container that is much too large holds excess wet mix around the roots. Set the plant where it gets bright, filtered light; gentle morning sun is often suitable, while strong midday sun behind glass can scorch the leaf. Keep it warm and away from cold drafts.
- Plant the tuber correctly. Fill the pot with the loose mix and place the tuber with its growing point facing upward. Cover it with soil to the depth indicated for the species; if there is no label, a practical starting point is to cover it with soil about as deep as the tuber is tall. Do not bury a visible emerging shoot. Water once to settle the mix and let excess drain completely.
- Water by checking the soil. During active growth, water thoroughly when the top inch or two of mix feels dry. Empty the saucer, and never leave the pot standing in water. The mix should remain lightly and evenly moist, not soggy. A large leaf can use water quickly in warm weather, so check more often then; in cool or dim conditions, wait longer between waterings.
- Feed only while it is growing. Once a leaf is established, apply a balanced liquid fertilizer at half the label’s recommended strength every two to four weeks, or follow the product directions for a lower-frequency feed. Do not fertilize a dormant, leafless tuber. Stop feeding as the leaf yellows and growth slows.
- Allow the plant to finish its cycle. A voodoo lily may naturally yellow and lose its single leaf as it enters dormancy. Reduce watering as the leaf declines, then stop routine watering once it has died back and the tuber is resting. Keep the pot in a dry, frost-free place. Avoid pulling off a leaf that is still partly green; it is returning stored energy to the tuber.
- Restart watering when growth returns. When a new shoot appears, move the pot back into bright indirect light and begin watering lightly. Increase watering as the shoot and leaf develop, always letting excess drain away. Resume fertilizer only after the plant is actively growing.
- Repot or divide with care. Repot at the start of a new growth cycle if the tuber has outgrown its pot or the mix has broken down. Remove old mix and inspect the tuber. If it has offsets, separate them only if they have their own growing point and enough tuber tissue; use a clean knife, allow cut surfaces to dry, and pot each piece separately. Do not divide a small or damaged tuber just to multiply it.
Common Mistakes
- Keeping dormant soil wet: This is a frequent cause of tuber rot. Reduce water as the leaf dies and keep the resting tuber dry.
- Using a pot without drainage: Water collects around the tuber and roots. Repot into a container with open drainage holes and empty the saucer.
- Assuming every bare tuber is dead: Dormancy can last for weeks or months. Check that the tuber is firm, not soft or foul-smelling, and avoid digging it up repeatedly.
- Giving harsh direct sun or too little light: Strong sun can scorch foliage, while very low light can produce weak growth. Adjust gradually toward bright, filtered light.
- Fertilizing during dormancy: A leafless tuber cannot use the feed, and salts can build up in the pot. Wait for active growth.
- Expecting a scent-free flower: Some species produce a strong, short-lived odor to attract pollinators. This is normal; provide ventilation and move the plant temporarily if needed.
Tips
- Mark the pot with the plant name and the date growth begins. This helps you learn its individual seasonal rhythm.
- Rotate the pot occasionally while the leaf is growing so it receives light more evenly.
- Good airflow helps reduce fungal problems. Do not mist as a substitute for proper watering; wet foliage is unnecessary for most indoor plants.
- Use room-temperature water and avoid letting the mix dry out completely during vigorous leaf growth.
- Wear gloves when cutting or repotting. Voodoo lilies are aroids and contain irritating calcium oxalate crystals; do not eat any part, and wash hands and tools afterward.
Troubleshooting
- The tuber is soft, blackened, or smells rotten: Remove it from the pot and inspect it. With a clean blade, cut away only firm, healthy tissue beyond the damaged area. Let the cut dry, then repot in fresh, barely moist mix and improve drainage. Discard a tuber that is extensively mushy or decayed.
- No shoot appears: Confirm the tuber is firm, warm, and planted with its growing point up. If it is dormant, give it time; do not keep adding water. A shriveled tuber may be too dry, while a soft one is likely rotting.
- The leaf turns yellow early: Check for soggy soil, poor drainage, cold exposure, or a naturally approaching dormant period. Correct the conditions, but if the plant has completed its normal cycle, let the leaf die back and reduce watering.
- Leaf edges are brown or crisp: Check whether the mix is drying too far during active growth, the plant is in hot direct sun, or it sits near a heater. Water when the surface layer dries and move it to a steadier, filtered-light location.
- Small pests appear: Inspect leaf undersides for spider mites, aphids, or mealybugs. Isolate the plant, wipe pests away, and use insecticidal soap according to its label, testing a small area first.
Frequently Asked Questions
How often should I water a voodoo lily?
There is no fixed weekly schedule. While it has an active leaf, water when the top inch or two of mix is dry; during dormancy, keep the tuber dry.
Does a voodoo lily need full sun?
Usually not indoors. Bright, indirect light or gentle morning sun is safer than intense afternoon sun, which can scorch the foliage.
Is a voodoo lily poisonous?
Its tissues contain irritating calcium oxalate crystals and can cause mouth or skin irritation. Keep it out of reach of children and pets, and do not ingest it.
Why does my voodoo lily smell bad?
Some species produce a strong odor when flowering to attract pollinating insects. The bloom is temporary; ventilate the room or move the plant if the scent is bothersome.
Can I grow a voodoo lily outdoors?
Yes, in a warm, sheltered location with suitable filtered light, provided the species suits your climate. Protect it from frost, and lift or keep the tuber dry during cold or wet dormancy if it is not winter-hardy.
Should I cut off the leaf when it starts to yellow?
No. Let it die back naturally so the tuber can reclaim stored energy. Remove it once it is fully yellow or dry.