The peace lily (Spathiphyllum) is one of the few houseplants that flowers reliably indoors and tolerates low light — a rare, forgiving combination. It’s also wonderfully communicative: when it’s thirsty, it tells you. Here’s how to keep one lush and blooming.

Light

Peace lilies do best in medium to bright indirect light, but they tolerate lower light better than almost any other flowering plant. The trade-off: in dim spots they grow well but flower less. For more blooms, give it brighter (still indirect) light. Avoid direct sun, which scorches the leaves.

Watering

This is where the peace lily makes life easy. It droops dramatically when thirsty and perks back up within hours of watering. That built-in signal makes it nearly impossible to underwater for long.

Aim to water when the top inch of soil feels dry — usually about weekly. Don’t wait for a full droop every time, though; repeated wilting stresses the plant. Keep the soil lightly, consistently moist but never soggy, and always use a pot with drainage.

Peace lilies can be sensitive to chemicals in tap water (chlorine, fluoride), which can brown the leaf tips. If that’s an issue, use filtered water or let tap water sit out overnight before using.

Why won’t it bloom?

Those elegant white “flowers” are actually modified leaves called spathes. To encourage them:

  • Give it brighter indirect light.
  • Feed with a balanced fertilizer at half strength every 4–6 weeks in spring and summer.
  • Be patient — a stressed or newly repotted plant often pauses blooming for a season.

Soil, potting and humidity

Use a standard well-draining potting mix. Peace lilies enjoy higher humidity and warmth (65–80°F / 18–27°C); brown leaf tips often signal dry air. Group plants together or add a humidifier if your home is dry. Repot every 1–2 years when roots fill the pot.

Common problems

  • Drooping — thirsty (most common) or, if the soil is soggy, overwatered. Check the soil first.
  • Brown leaf tips — dry air, inconsistent watering, or tap-water sensitivity.
  • Yellow leaves — overwatering or natural aging of the oldest leaves.
  • No flowers — usually too little light or no feeding.
  • Green flowers — often too much fertilizer or aging blooms.

Is it toxic to pets?

Yes — peace lilies are toxic to cats and dogs if chewed, causing mouth and stomach irritation. Keep them out of reach.

The bottom line

Give a peace lily medium-to-bright indirect light, keep the soil lightly moist, feed it in the growing season, and let its dramatic droop tell you when to water. In return you get one of the easiest, most reliably blooming plants you can grow indoors.