How to Care for a Spathiphyllum Plant? | Keep Peace Lilies Thriving

Learning how to care for a Spathiphyllum plant comes down to matching its tropical origins: bright indirect light, consistently moist soil, and warmth. The peace lily tolerates low light and sporadic watering better than most houseplants, but it rewards steady attention with glossy leaves and recurring white blooms. This guide covers light, water, soil, temperature, fertilizer, and the most common mistakes that send these plants into a decline.

Light and Temperature Needs

Peace lilies grow in bright indirect light, where they produce the most flowers. They tolerate low-light corners, but bloom production drops sharply in dim rooms.

Keep the plant warm. Cold drafts from windows, doors, and air-conditioning vents are a common cause of leaf droop and blackened edges.

How to Water a Peace Lily Correctly

Water when the top inch of soil feels dry, then water thoroughly until it runs from the drainage holes. The goal is moist soil, never soggy. Letting the pot sit in a saucer of standing water invites root rot, the fastest way to kill a peace lily.

Use room-temperature water. The plant will also tell you when it’s thirsty: the leaves droop dramatically, then recover within hours of watering.

Soil, Fertilizer, and Repotting

Plant peace lilies in a well-drained potting mix. The University of Florida recommends a rich, organic peat- or bark-based bagged potting soil, which holds moisture while still letting excess drain. Avoid garden soil — it compacts in containers and suffocates the roots.

Fertilize lightly during the growing season.

Repot when the plant becomes rootbound. Signs include roots growing through the drainage holes or circling the soil surface. Peace lilies actually bloom better when slightly pot-bound, so wait until it becomes difficult to keep the plant watered enough before moving it to a larger container. When you do repot, use a pot only one size larger.

Yellow leaves at the base of the plant will not green up again — cut them off at the stem. This keeps the plant tidy and redirects energy to healthy growth, a routine South Dakota State recommends as part of regular care.

Common Mistakes and Pet Safety

Most peace lily problems trace back to a handful of errors. Overwatering and letting roots sit in water cause root rot. Direct sun scorches leaves. Cold drafts and exposure to temperatures below 60°F cause blackened foliage. Overfertilizing burns the roots and produces brown leaf tips. If your plant displays any of these symptoms, correct the condition and trim damaged leaves — peace lilies bounce back well when the underlying issue is fixed.

Keep peace lilies away from dogs and cats. The plant contains insoluble calcium oxalates, and ingestion causes oral irritation, drooling, vomiting, and difficulty swallowing. If you suspect your pet has chewed the plant, contact your veterinarian or a poison control center immediately.

Ready to grow a larger showpiece variety? Our roundup of the best spathiphyllum sensation plants for sale highlights top-rated options for bigger blooms and bolder foliage.