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Houseplants · Evergreen tropical perennial

Peace Lily

Spathiphyllum wallisii

Elegant and forgiving, the Peace Lily thrives in dim corners and rewards neglect with luminous white blooms that glow like candle flames.

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Sunlight
Low to bright indirect light
Water
Weekly, allowing top inch of soil to dry between waterings
Harvest
n/a - grown for foliage and blooms
Hardiness
Zones 11-12 outdoors; grown as a houseplant elsewhere
About

Shadow Lover, Light Bringer

The Peace Lily is one of the few flowering houseplants that genuinely tolerates low light, making it a staple in offices, hallways, and rooms that rarely see direct sun. Its deep green, glossy leaves create a lush backdrop for the distinctive white spathes - modified leaves cradling a slender flower spike called a spadix - that appear in spring and often again in autumn.

Native to the tropical rainforest floors of Colombia and Venezuela, Spathiphyllum wallisii evolved beneath a dense canopy where light is filtered and humidity is high. That heritage makes it perfectly suited to the warm, indirect conditions of most homes. NASA's Clean Air Study famously identified it as an effective remover of airborne toxins including ammonia, benzene, and formaldehyde.

How to grow

Planting & care

Pot your Peace Lily in a well-draining, peat-free potting mix in a container with drainage holes. Choose a spot with bright to medium indirect light - too little light and it will rarely bloom; direct sun scorches the leaves quickly. Water thoroughly once the top inch of soil feels dry, and empty saucers after 30 minutes to prevent root rot. Feed with a balanced liquid fertilizer diluted to half-strength once a month through spring and summer only.

Peace Lilies are drama queens about water: leaves droop visibly when thirsty, then perk up within hours of a good drink. Use that signal as your guide rather than a rigid schedule. Boost humidity by misting the leaves, grouping plants together, or setting the pot on a tray of damp pebbles. Wipe leaves with a damp cloth every few weeks to remove dust and keep them photosynthesizing efficiently. Repot every 1-2 years when roots circle the base of the pot.

Good to know

Beautiful but Not for Everyone

Keep Peace Lilies out of reach of children and pets - all parts of the plant contain calcium oxalate crystals that cause mouth irritation, drooling, and digestive upset if chewed. Despite the NASA headlines, you would need dozens of plants to meaningfully improve indoor air quality, so enjoy it for its beauty and treat the air-cleaning as a pleasant bonus.

Common questions

How much sun does Peace Lily need?

Peace Lily grows best in low to bright indirect light.

How often should you water Peace Lily?

Give it about weekly, allowing top inch of soil to dry between waterings.

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