Temperature
65–85°F
Keep away from winter window glass and heating vents.
Peace lily
Spathiphyllum wallisii
Peace lily wants bright indirect light and water every 5 to 7 days, once top inch dry. Toxic to cats, dogs, and humans.
Light
Bright indirect
LowMediumBright indirectDirect
One of the few plants that will still flower in low light, though less often than in bright indirect.
Water
Every 5–7 days
Baseline for a 6-inch pot indoors. Check first: water when top inch dry, not on a schedule.
Humidity
40% and up
Wants 60%. Struggles in dry winter air.
Difficulty
Easy
Scores 2 of 5: Dramatic wilting makes its needs obvious, but it wants more consistent moisture than most houseplants.
Habit
Clumping
Grows to 12–24 inches. No support needed.
Toxic to cats, dogs, and humans
Contains insoluble calcium oxalates. Reported signs include oral irritation, intense burning of mouth and tongue, excessive drooling.
If a pet has chewed a leaf, rinse the mouth with water and call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435.
Classification per the ASPCA.
DISPLAY — in-content responsive
Light
Bright indirect light. One of the few plants that will still flower in low light, though less often than in bright indirect.
Water
Every 5 to 7 days in a 6-inch pot, when top inch dry.
Treat the interval as a starting point and the test as the actual instruction. Pot size, light level and season all move the number.
| Method | keep evenly moist |
|---|---|
| Test before watering | top inch dry |
Soil and potting
Standard potting mix with one part perlite added.
Repot roughly every 2 years, or when roots come through the drainage holes and water runs straight through without absorbing.
Common problems
Ranked by how often each turns out to be the cause for this species.
Propagation
Division in soil. Roots in 21 to 42 days.
| Preferred method | division |
|---|---|
| Medium | soil |
| Time to root | 21–42 days |
| Node required | No |
| Best season | Spring |
Sources
- ASPCA Animal Poison Control, Toxic and Non-Toxic Plant List — Spathiphyllum wallisii
- Missouri Botanical Garden, Plant Finder — Spathiphyllum wallisii
- Royal Botanic Gardens Kew, Plants of the World Online
- Wikidata entity Q761494
Compiled and edited by Tony Valcarcel · 2026-09-02
Tony Valcarcel is the editor and publisher of this database, not a horticulturist
or a veterinarian. Every fact above is drawn from the sources listed, and
toxicity severity is reported only where one of them stated it.
How this is sourced.
Last updated 2026-09-02