White Sails (Peace Lily) care

Light

The Goldilocks zone. Not the south-facing windowsill (too hot, too direct), not the back of the room (too dim, growth stalls). Performs best in medium indirect light, such as a few metres back from a bright window. Tolerates low light though flowering diminishes. Avoid direct sunlight, which causes leaf scorch and bleaching of the spathes. If you can't decide, a free phone lux-meter app aimed at the leaf at noon should read between 800 and 1,500 lux.

Watering

Watering white sails: every 7–10 days during active growth; reduce to every 14 days in winter. 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. Keep the growing medium consistently moist. Water thoroughly until it drains from the bottom, then allow the top centimetre to dry before watering again. This species is sensitive to drought — wilting can occur quickly in warm rooms.

Soil and pot

White Sails grows best in moisture-retentive, well-aerated potting mix. Use a peat-free multipurpose compost blended with 20–25% perlite or coarse grit to ensure adequate drainage while holding moisture. A slightly acidic pH of 6.0–6.5 suits this species well. 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

White Sails sits happiest at around 50–70% humidity and 18–29°C (64–84°F). Native to humid Colombian rainforests, it appreciates above-average humidity. Brown leaf margins develop in dry air below 40%. Group with other plants, use a pebble tray, or run a humidifier in heated rooms during winter. If you keep the room above 18–29°C 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 white sails sparingly. Apply a half-strength balanced liquid fertiliser once a month from March to September. Avoid high-nitrogen feeds, which promote foliage at the expense of flowers. Do not feed in autumn and winter when growth slows. 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 white sails in the Growli community. Each is annotated with the most common cause so you know where to start.

• Drooping despite moist soil — Can indicate root rot from consistently waterlogged conditions. Remove from the pot, inspect the roots, trim any blackened sections, and repot into fresh well-draining compost. Ensure the pot has drainage holes.
• Green spathes — Spathes naturally turn green as they age. If new spathes emerge green rather than white, the plant is likely receiving too much fertiliser or too much light. Reduce feeding and move to a slightly shadier position.
• Spider mite infestation — Fine webbing and stippled leaves indicate spider mites, which thrive in hot, dry conditions. Increase humidity, wipe leaves with a damp cloth, and treat with insecticidal soap or neem oil, repeating weekly for three to four weeks.

Propagation

Divide clumps in spring at repotting time. Tease apart rooted offsets from the base of the parent plant, ensuring each division has several roots and leaves, and pot individually into moist compost. Keep warm and shaded until established. 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

White Sails is toxic to pets. Like all Spathiphyllum species, S. floribundum contains insoluble calcium oxalate crystals. Ingestion by cats, dogs, or humans causes oral burning, excessive salivation, swelling of the mouth and throat, and vomiting. ASPCA lists the genus as toxic to dogs and cats. Keep out of reach of pets and children. 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.

White Sails deep-dive guides

Every aspect of white sails care, each with its own calibrated guide:

• Common white sails problems & fixes
• White Sails watering schedule
• White Sails light requirements
• Best soil mix for white sails
• White Sails fertilizing guide
• When to repot white sails
• How to propagate white sails
• How to prune white sails
• What's eating my white sails?
• White Sails growth rate & size
• White Sails cold hardiness
• White Sails temperature & humidity
• Is white sails toxic to cats & dogs?
• Is white sails toxic to cats?
• Is white sails toxic to dogs?
• All 9 Spathiphyllum varieties

Featured in these plant shortlists

White Sails qualifies for 7 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best low-light houseplants — Houseplants that need no direct sun and cope with a north-facing room or a spot well back from a window.
• 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.
• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Best houseplants for beginners — Forgiving of irregular light and watering — the houseplants least likely to die in a new plant parent’s first season.
• Best humidity-loving houseplants — Houseplants that thrive in a bathroom, kitchen, or by a humidifier — selected by documented humidity preference.
• Best bathroom plants — Humidity-loving houseplants that also cope with lower light — suited to the steamy, often-dim conditions of a typical bathroom.
• 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

White Sails is also known as White Sails, Peace Lily, and Snowflower.

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• All 8452 plant care guides in the Growli library