Peace Lily — quick answer

Peace Lily (Spathiphyllum wallisii) is a indoor / houseplant, a member of the Araceae family. It is traditionally associated with Indoor Air Pollution, Formaldehyde Exposure Mitigation, Benzene Exposure Reduction, Trichloroethylene Exposure Mitigation. Reported toxicity level: mild. Evidence level: traditional. ✓ Popular indoor plant known for elegant white spathes and dark green foliage. ✓ Highly effective at purifying indoor air by removing common toxins. ✓ Contains calcium oxalate crystals, making it mildly toxic if…

✓ Indoor Air Purification — Spathiphyllum wallisii is highly effective at removing common indoor air pollutants such as formaldehyde, benzene, trichloroethylene, xylene, and ammonia, as highlighted by NASA's Clean Air Study. ✓ Humidity Enhancement — Through its natural transpiration process, the Peace Lily releases moisture into the air, helping to increase indoor humidity levels, which can be beneficial for respiratory health and dry skin. ✓ Stress Reduction — The presence of living plants like the Peace Lily in indoor environments contributes to biophilic design principles, fostering a…

What is Peace Lily used for?

✓ Indoor Air Purification — Spathiphyllum wallisii is highly effective at removing common indoor air pollutants such as formaldehyde, benzene, trichloroethylene, xylene, and ammonia, as highlighted by NASA's Clean Air Study. ✓ Humidity Enhancement — Through its natural transpiration process, the Peace Lily releases…

How is Peace Lily used?

✓ Indoor Air Quality Improvement — Place Peace Lilies strategically in living spaces, offices, or bedrooms to maximize their air-purifying capabilities, especially near sources of potential pollutants. ✓ Ornamental Houseplant — Utilize its elegant foliage and distinctive white spathes as a decorative element to…

Is Peace Lily safe?

✓ Keep Out of Reach — Always place Peace Lilies in locations inaccessible to small children and pets to prevent accidental ingestion. ✓ Wear Gloves — When handling or repotting, especially if you have sensitive skin, wear gloves to avoid contact with the irritating sap. ✓ Educate Household Members — Inform all…

Does Peace Lily have side effects?

✓ Oral Irritation — Ingestion of any part of the Peace Lily can cause immediate burning and irritation of the mouth, tongue, and throat due to calcium oxalate crystals. ✓ Swelling — Swelling of the lips, tongue, and throat is common after ingestion, potentially leading to difficulty speaking or swallowing. ✓ Nausea…

How do you grow Peace Lily?

✓ Light — Prefers bright, indirect light; an east-facing window is ideal, avoiding direct sun which can scorch leaves. ✓ Soil — Requires a rich, loose, well-draining potting mix high in organic matter, mimicking its tropical forest floor habitat. ✓ Watering — Allow the top inch of soil to dry out between waterings;…

Peace Lily 1Peace Lily 2Peace Lily 3

Peace Lily

Spathiphyllum wallisii

Medicinal
AraceaeherbmildEvidence: TraditionalCentral America, Southeast Asia
China, Japan, South Korea, Thailand, Malaysia, Indonesia, Philippines, Vietnam
3 images
0

Medical Disclaimer: This content is for educational purposes only. It is not medical advice. Please consult a qualified healthcare professional before using any herbal remedy.

Safety Overview

Toxicity: mild
Edibility: non-edible
Evidence: traditional

1.Peace Lily — Overview

Peace Lily — Main Image

The Peace Lily, scientifically known as Spathiphyllum wallisii, is an iconic perennial herbaceous plant belonging to the Araceae family, native to the tropical rainforests of Central and South America, particularly regions of Colombia and Venezuela. This species is celebrated for its striking aesthetic, featuring lush, dark green, lance-shaped leaves that can reach lengths of 12 to 15 inches, exhibiting a characteristic glossy texture. Its most distinguishing feature is its 'flower,' which is botanically a modified leaf structure called a spathe, typically pure white to light green, elegantly surrounding a central, elongated spadix.

Under optimal conditions, Spathiphyllum wallisii can grow to an indoor height of 24 to 36 inches, making it a popular choice for interior landscaping. It thrives in low to medium indirect light, tolerating fluorescent light well, but its prolific blooming is often spurred by brighter, yet filtered, light exposure. The plant's natural habitat dictates its preference for high humidity and consistent moisture, conditions that contribute to its robust photosynthesis and vibrant foliage.

The smooth, dark green leaves provide a beautiful contrast to the white spathes, which are not true flowers but bracts designed to attract pollinators in their native environment. Its taxonomic classification within the Araceae family highlights its unique floral structure and shared characteristics with other aroids, many of which also contain calcium oxalate crystals.

Trusted Scientific References

1. Authoritative external sources for Spathiphyllum wallisii

1.1 Wikipedia — Spathiphyllum wallisii

1.2 Kew POWO (Plants of the World Online)

1.3 PubMed — peer-reviewed research

1.4 NCBI Taxonomy Browser

1.5 GBIF — Global Biodiversity

1.6Peace Lily should be interpreted through verified botanical identity, practical care, and responsible safety language. This recovery note adds the missing context needed for a complete profile: match light to the plant's habit, use well-drained soil, water according to season, and avoid unsupported medicinal or edible claims. For publishing, the plant can be presented as a source-backed indoor plant with clear care guidance, common problem diagnosis, and conservative safety wording.

1.1.Peace Lily — Key Features

  • Striking White SpathesThe iconic white, leaf-like bracts that surround the true flower spadix.
  • Glossy Dark Green LeavesLance-shaped foliage that adds a lush, tropical aesthetic.
  • Air Purification ChampionRenowned for its ability to filter indoor air pollutants like formaldehyde and benzene.
  • Low Light ToleranceAdapts well to various indoor light conditions, making it versatile for home or office.
  • Humidity LoverThrives in high humidity, mimicking its native rainforest environment.
  • Easy CareGenerally considered a low-maintenance houseplant suitable for beginners.
  • Evergreen PerennialMaintains its foliage year-round, providing continuous greenery.
  • Moderate SizeTypically grows 1-4 feet tall indoors, fitting well in most spaces.
  • Tropical OriginNative to the warm, humid regions of Central and South America.
  • Calcium Oxalate ContentContains irritating crystals, necessitating careful placement away from children and pets.

1.2.Peace Lily — At-a-Glance Summary

  • Popular indoor plant known for elegant white spathes and dark green foliage.
  • Highly effective at purifying indoor air by removing common toxins.
  • Contains calcium oxalate crystals, making it mildly toxic if ingested by humans or pets.
  • Thrives in indirect light, high humidity, and consistent warmth.
  • Requires well-draining soil and prefers to be slightly underwatered.
  • Symbolizes peace, hope, and healing, often given as a thoughtful gift.

2.Peace Lily — Systematic Position

3.Peace Lily — Botanical Stats

4.Peace Lily — Plant Morphology

5.Peace Lily — Geographic Distribution

6.Peace Lily — Historical Applications

7.Peace Lily — Active Compounds

  • Calcium Oxalate CrystalsThese microscopic, needle-shaped crystals (raphides) are a primary defense mechanism, causing irritation upon ingestion due to their mechanical damage and release of inflammatory compounds.
  • FlavonoidsIncludes quercetin, vitexin, and isovitexin, which are potent antioxidants and possess anti-inflammatory properties, contributing to the plant's natural defense against oxidative stress.
  • Phenolic AcidsChlorogenic acid is a notable example, known for its strong antioxidant and anti-inflammatory activities, playing a role in the plant's physiological responses and potential health benefits when consumed in other plants.
  • PhytosterolsCompounds like sitosterol and campesterol are plant sterols that mimic cholesterol, found in cell membranes, and are associated with anti-inflammatory and cholesterol-lowering effects in dietary contexts.
  • TerpenoidsLinalool, limonene, and germacrene D are volatile organic compounds contributing to the plant's fragrance and acting as natural pesticides or signaling molecules within the plant ecosystem.
  • AlkaloidsWhile not extensively studied or primary constituents, some plants in the Araceae family may contain trace amounts of nitrogenous compounds with varying pharmacological activities.
  • SaponinsThese glycosides can form a soapy lather in water and are involved in plant defense, potentially having hemolytic or anti-fungal properties.
  • GlycosidesVarious sugar-bound compounds that play roles in storage, transport, and defense, contributing to the plant's biochemical complexity.
  • Proteins and EnzymesEssential for all metabolic processes, including photosynthesis, detoxification, and growth, forming the structural and functional basis of the plant.
  • CarbohydratesSugars and starches providing energy storage and structural support for the plant's tissues.
  • LipidsFats and oils crucial for energy storage, cell membrane structure, and as precursors for other important biochemicals.
  • Volatile Organic Compounds (VOCs)Beyond specific terpenoids, the plant may release other VOCs that interact with its environment, contributing to its air-purifying capabilities and defense mechanisms.

8.Peace Lily — Modern Studies

  • Indoor Air PurificationSpathiphyllum wallisii is highly effective at removing common indoor air pollutants such as formaldehyde, benzene, trichloroethylene, xylene, and ammonia, as highlighted by NASA's Clean Air Study.
  • Humidity EnhancementThrough its natural transpiration process, the Peace Lily releases moisture into the air, helping to increase indoor humidity levels, which can be beneficial for respiratory health and dry skin.
  • Stress ReductionThe presence of living plants like the Peace Lily in indoor environments contributes to biophilic design principles, fostering a sense of calm and reducing psychological stress.
  • Environmental DetoxificationIts roots and associated microorganisms actively absorb and metabolize various volatile organic compounds (VOCs) from the air, contributing to a healthier living space.
  • Aesthetic and Mood UpliftmentThe elegant appearance and vibrant greenery of the Peace Lily can significantly improve the visual appeal of a room, positively influencing mood and overall well-being.
  • Antioxidant Support (Indirect)While not for direct consumption, the plant contains compounds like quercetin and vitexin, which possess antioxidant properties that generally support cellular health and reduce oxidative stress within the plant itself.
  • Anti-inflammatory Potential (Indirect)Chlorogenic acid, present in the plant, is known for its anti-inflammatory effects in other botanical contexts, suggesting an indirect contribution to a healthy environment.
  • Improved Sleep QualityBy purifying the air and contributing to a more serene environment, Peace Lilies can indirectly support better sleep patterns and overall restfulness.
  • Allergen ReductionThe broad leaves can help trap dust particles from the air, preventing them from circulating and potentially reducing exposure to airborne allergens.
  • Cognitive Function SupportA cleaner, more oxygenated indoor environment, facilitated by plants like the Peace Lily, can contribute to improved concentration and mental clarity.
  • Natural Sound DampeningWhile minor, the foliage of indoor plants can slightly absorb sound, contributing to a quieter and more peaceful indoor atmosphere.
  • Support for Respiratory HealthBy actively removing airborne toxins and increasing humidity, the Peace Lily creates a more favorable environment for individuals with respiratory sensitivities.

9.Peace Lily — Adverse Effects

9.1.Peace Lily — Reported Side Effects

  • Oral IrritationIngestion of any part of the Peace Lily can cause immediate burning and irritation of the mouth, tongue, and throat due to calcium oxalate crystals.
  • SwellingSwelling of the lips, tongue, and throat is common after ingestion, potentially leading to difficulty speaking or swallowing.
  • Nausea and VomitingStomach upset, including nausea and vomiting, may occur if a significant amount of plant material is ingested.
  • Skin IrritationContact with the sap can cause mild skin irritation or dermatitis in sensitive individuals, characterized by redness and itching.
  • Pet ToxicityHighly toxic to cats and dogs, causing similar oral irritation, excessive drooling, vomiting, and difficulty swallowing if ingested.
  • Respiratory DistressIn severe cases of ingestion, especially in pets or small children, swelling of the airways could potentially lead to respiratory distress.
  • Eye IrritationAccidental contact of sap with eyes can cause irritation, redness, and discomfort.

9.2.Peace Lily — Risk Assessment

  • Keep Out of ReachAlways place Peace Lilies in locations inaccessible to small children and pets to prevent accidental ingestion.
  • Wear GlovesWhen handling or repotting, especially if you have sensitive skin, wear gloves to avoid contact with the irritating sap.
  • Educate Household MembersInform all household members, particularly children, about the plant's toxicity and the importance of not ingesting any part of it.
  • Monitor PetsClosely supervise pets around Peace Lilies; if ingestion is suspected, seek veterinary attention immediately.
  • First Aid for IngestionIn case of ingestion, rinse the mouth thoroughly with water; for severe symptoms, seek medical advice promptly.
  • Skin ContactIf sap comes into contact with skin, wash the affected area immediately with soap and water.
  • Eye ContactIf sap gets into eyes, flush thoroughly with plenty of water and seek medical attention if irritation persists.
  • Not for Internal UseEmphasize that Peace Lily is strictly an ornamental plant and should never be consumed or used for internal medicinal purposes.

10.Peace Lily — How to Use

  • Indoor Air Quality ImprovementPlace Peace Lilies strategically in living spaces, offices, or bedrooms to maximize their air-purifying capabilities, especially near sources of potential pollutants.
  • Ornamental HouseplantUtilize its elegant foliage and distinctive white spathes as a decorative element to enhance interior aesthetics and create a calming atmosphere.
  • Humidity EnhancementGroup several Peace Lilies or place them near other humidity-loving plants to create a microclimate that benefits all plants and contributes to indoor humidity.
  • GiftingPresent Peace Lilies as thoughtful gifts, symbolizing peace, sympathy, and healing, especially during times of loss or for housewarmings.
  • Biophilic Design IntegrationIncorporate Peace Lilies into interior design schemes to connect occupants with nature, promoting well-being and reducing stress.
  • Educational DisplayUse the plant in educational settings to demonstrate phytoremediation and the benefits of indoor plants on air quality.
  • Therapeutic GardeningEngage in the care of Peace Lilies as a form of therapeutic horticulture, benefiting mental health through nurturing living organisms.
  • Home StagingEmploy Peace Lilies to add a touch of natural elegance and freshness to homes being prepared for sale, enhancing their appeal.

11.Peace Lily — Growing Guide

  • LightPrefers bright, indirect light; an east-facing window is ideal, avoiding direct sun which can scorch leaves.
  • SoilRequires a rich, loose, well-draining potting mix high in organic matter, mimicking its tropical forest floor habitat.
  • WateringAllow the top inch of soil to dry out between waterings; prefers being slightly underwatered to overwatered, which can lead to root rot.
  • TemperatureThrives in warm, consistent temperatures between 65-80°F (18-27°C); protect from cold drafts and temperatures below 55°F (13°C).
  • HumidityPrefers high humidity; mist leaves regularly, especially during dry periods, or place on a moist gravel tray.
  • FertilizationFeed monthly during the growing season (spring and summer) with a balanced liquid fertilizer diluted to half strength; reduce or cease feeding in winter.
  • RepottingRepot annually in spring when roots have filled the pot, moving to a slightly larger container with fresh potting mix.
  • DeadheadingRemove faded flowers (spathes) at their base to encourage new blooms and maintain plant vigor.

Reviewed by the Flora Medical Global Botanical Review Panel

Multi-disciplinary editorial group · Botany · Ethnobotany · Herbal-medicine literature

Who reviewed this: This page was checked by the Flora Medical Global Botanical Review Panel — an in-house editorial group of botany graduates, ethnobotany researchers, and horticulture practitioners who collectively maintain our 7,000+ plant encyclopedia. Meet the team.

Our 4-step verification process

  1. 1. Taxonomic verification

    Scientific names and synonyms cross-checked against Kew POWO, World Flora Online, and The Plant List.

  2. 2. Phytochemical & medicinal cross-reference

    Active compounds, traditional uses, and reported activities are cross-referenced with PubMed, USDA Dr. Duke's database, and peer-reviewed ethnobotanical literature.

  3. 3. Conservation & distribution check

    Distribution, ecology, and conservation status confirmed against GBIF occurrence records and the IUCN Red List.

  4. 4. Editorial & safety review

    Every entry passes an editorial pass for clarity, originality, and safety notices (toxicity, contraindications, dosage caveats) before publication.

Last reviewed:

Read our editorial & fact-checking policy

Important medical disclaimer: This content is for educational and research purposes only. It is not medical advice and is not a substitute for consultation with a licensed healthcare provider. Do not use any herb to self-treat a medical condition without professional guidance.

Editorial Note: This page is for educational and research purposes only and is not medical advice.

Written by: Flora Medical Global Editorial Team

Reviewed by: Flora Medical Global Botanical Review Panel

Last Updated: June 15, 2026