How to Care for a Peace Lily: Watering & Blooms

The peace lily (Spathiphyllum) is one of the most rewarding houseplants for low-light rooms, prized for its glossy dark leaves and elegant white blooms. It is also unusually communicative — when it gets thirsty it dramatically droops, then springs back within hours of watering, which makes it a great teaching plant for anyone learning to read a houseplant. The trade-offs are that it likes consistent moisture and decent humidity, and it sulks in dry air or harsh sun. This guide covers everything from watering and light to the secret of coaxing more of those signature flowers, plus fixes for the handful of common problems.

Light: medium to bright, never direct

Peace lilies earned their popularity as low-light plants, and they truly do survive in dim corners and windowless offices under fluorescent lighting. But survival and flowering are two different goals. In low light the plant stays green and healthy yet rarely blooms. To actually see those white spathes, give it medium to bright indirect light — a few feet back from an east or north window is close to perfect.

Keep it out of direct sunlight. The leaves scorch easily, developing pale, bleached patches or crispy brown streaks when exposed to strong rays through glass, especially harsh afternoon sun. If leaves look washed out or burned, move the plant farther from the window or add a sheer curtain. Conversely, if a healthy plant simply refuses to flower, the most common reason is too little light — nudging it to a brighter (but still indirect) spot usually fixes it. Rotate the pot now and then for even, symmetrical growth.

Watering: consistent moisture, and a built-in alarm

Unlike drought-loving plants, the peace lily prefers its soil kept lightly and evenly moist — not soggy, but never bone dry. Water when the top inch of soil feels dry to the touch, which in a typical home means every 5 to 10 days depending on light, warmth, and pot size. Water thoroughly until it drains from the bottom, then empty the saucer so the roots are not left standing in water, which leads to rot.

The peace lily’s best feature is that it tells you when it is thirsty: the whole plant wilts and the leaves droop dramatically. Water it and it perks back up within a few hours, none the worse for the drama. While this makes the plant forgiving, repeated severe wilting stresses it and browns the leaf edges over time, so try to water before it collapses rather than using droop as your only cue. These plants are sensitive to chlorine and fluoride in tap water, which can brown the tips, so use filtered or rainwater, or leave tap water out overnight before using it. Cut back watering somewhat in winter when growth slows.

Humidity, temperature, and soil

As a tropical rainforest plant, the peace lily wants humidity of 50 percent or higher and shows its displeasure with dry air through brown, crispy leaf tips — one of the most common complaints with this plant. Run a small humidifier nearby, group it with other plants, or set the pot on a tray of pebbles and water with the pot sitting above the waterline. A bathroom or kitchen with naturally higher humidity is an ideal home.

Keep temperatures between 65 and 85 F and protect the plant from anything below 55 F, as well as from cold drafts and the dry air of heating vents. For soil, use a rich but well-draining potting mix; a standard quality potting soil with a handful of perlite added gives moisture retention without staying waterlogged. Always plant in a container with drainage holes — even a moisture-lover suffers if water cannot escape.

Feeding and encouraging blooms

Feed lightly during the growing season from spring through summer with a balanced houseplant fertilizer diluted to half strength, roughly every 6 to 8 weeks. Peace lilies are not heavy feeders, and overfertilizing causes brown leaf tips and can actually suppress blooming, so go easy. Stop feeding in fall and winter.

The single biggest factor in getting more of those white blooms is light. A peace lily kept too dark grows lush leaves but never flowers; moving it to brighter indirect light is usually the cure. A little phosphorus-containing fertilizer during the growing season also supports flowering. Keep in mind that the white “flower” is actually a modified leaf called a spathe surrounding the true tiny flowers on the central spadix; spent blooms fade to green and then brown, and you can snip the whole stalk down at its base once it is done to keep the plant tidy and encourage new ones.

Repotting, dividing, and propagation

When to repot

Repot every 1 to 2 years or when roots fill the pot, circle the bottom, or push out the drainage holes — a sign you will also notice as the plant drying out and drooping faster between waterings. Spring is the best time. Move up one pot size, refresh the soil, and water it in well. A peace lily that needs water constantly and wilts within a day or two of watering is usually root-bound and ready for a bigger home.

Propagation by division

Peace lilies grow in clumps and are propagated by division rather than cuttings — they will not root from a single leaf. At repotting time, slide the plant out and gently separate the clump into sections, making sure each has several leaves and a healthy portion of roots. You can usually tease the crowns apart by hand or cut between them with a sterilized knife. Pot each division separately, keep it well watered and out of direct sun while it settles, and it will establish quickly. For more easy-to-divide houseplants, explore our plants and flowers guides.

Common problems and fixes

Drooping leaves

The most common cause is simply thirst — water it and it rebounds within hours. But if a peace lily droops while the soil is wet, suspect overwatering and root rot instead; check that the soil is not waterlogged and that the pot drains. Drooping can also follow cold drafts or a recent repot, both of which resolve as the plant adjusts.

Brown leaf tips and edges

Brown, crispy tips are the peace lily’s calling card and usually point to low humidity, inconsistent watering, mineral-heavy tap water, or overfertilizing. Raise humidity, water more evenly, switch to filtered or rainwater, and ease off the feed. You can trim the brown edges with clean scissors for appearance, cutting just inside the dead tissue.

No flowers, yellow leaves, and pests

No blooms almost always means too little light — move it brighter. Yellowing leaves can signal overwatering, too much direct sun, or just old age in lower leaves. Root rot from soggy soil shows as wilting plus mushy, blackened roots; trim the rot and repot in fresh mix. For pests, watch for mealybugs, spider mites, and scale; wipe the leaves and treat with insecticidal soap or diluted neem oil every 7 days until clear. A bathroom or other humid spot suits this plant well — see more humidity-friendly options in our indoor and small-space growing tips.

Is the peace lily toxic to pets?

Yes. Despite the name, it is not a true lily, but it does contain insoluble calcium oxalate crystals throughout its leaves and stems. If a cat, dog, or child chews it, expect mouth and throat irritation, drooling, pawing at the mouth, and vomiting. It is rarely life-threatening but painful, so keep the plant out of reach of pets and small children, and contact your vet or poison control if ingestion occurs. Note this is a different and far less dangerous toxicity than true lilies, which can cause kidney failure in cats.

Give a peace lily bright indirect light, evenly moist soil, and humid air, and it will reward you with lush foliage and recurring white blooms while tolerating conditions that defeat most flowering houseplants. Watch its leaves for thirst, keep the air from getting too dry, and this graceful plant will stay a standout for years.