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Peace Lily

Spathiphyllum wallisii

An elegant houseplant that combines lush, tropical foliage with stunning white blooms that seem to glow against the dark green leaves. Known for its air-purifying qualities and ability to tell you when it needs water by dramatically drooping, making it perfect for busy plant parents. This graceful beauty thrives in low light conditions where other flowering plants struggle.

Sun

Low to bright

☀️

Zones

11–12

USDA hardiness

🗺️

Height

1-6 feet

📏

Complete Growing Guide

Soil: High Organic Matter. Soil pH: Acid (<6.0). Drainage: Good Drainage, Moist. Height: 1 ft. 0 in. - 6 ft. 0 in.. Spread: 1 ft. 0 in. - 5 ft. 0 in.. Spacing: 12 inches-3 feet, 3 feet-6 feet. Propagation: Division.

Harvesting

Edibility: Leaves poisonous if eaten in large quantities.

Storage & Preservation

Fresh peace lily flowers last longest when cut stems are immediately placed in lukewarm water and displayed away from direct sunlight and heat sources. Change water daily and recut stems under running water to extend vase life to one week.

For propagation storage, freshly divided plants can be temporarily stored in slightly moist potting mix for up to a week in a shaded location if you can't plant immediately. Keep divisions consistently moist but not soggy.

While peace lilies aren't preserved like herbs or vegetables, you can press the flowers between heavy books for 2-3 weeks to create lasting botanical art. Place flowers between absorbent paper, change the paper after 48 hours, then press for an additional 2-3 weeks.

Preserve leaf cuttings for propagation by placing them in water or moist vermiculite, though success rates are lower than division. Remember that all parts of peace lilies are toxic if ingested, so handle and store away from children and pets.

History & Origin

Origin: Mexico, Tropical America, Malesia, and Western Pacific

Advantages

+Edible: Leaves poisonous if eaten in large quantities.

Considerations

-Toxic (Leaves): Medium severity

Companion Plants

Plant Together

Snake Plant

Both thrive in low to medium light and help purify indoor air together

Pothos

Similar humidity and watering needs, creates lush tropical display

ZZ Plant

Compatible low-light requirements and both tolerate irregular watering

Philodendron

Enjoys same humid conditions and filtered light as Peace Lily

Boston Fern

Both love high humidity and can share humid microclimate when grouped

Chinese Evergreen

Similar low-light tolerance and watering schedule preferences

Rubber Plant

Both prefer consistent moisture and bright, indirect light conditions

Monstera

Shares preference for humid environment and filtered sunlight

Keep Apart

Fiddle Leaf Fig

Requires much brighter light and drier soil, conflicting care needs

Cactus

Needs dry conditions and bright light, opposite of Peace Lily's humid, low-light needs

Eucalyptus

Requires full sun and dry soil, completely incompatible growing conditions

Pests & Disease Resistance

Resistance

Moderate resistance to most diseases

Common Pests

Spider mites, aphids, mealybugs, scale

Diseases

Root rot, leaf spot, brown leaf tips from low humidity

Frequently Asked Questions

How often should I water my peace lily?▼

Water when leaves begin to droop noticeably, typically every 5-7 days in most homes. The dramatic drooping is your peace lily's reliable signal that it needs water—don't water on a strict schedule but rather respond to this visual cue. Water thoroughly until it drains from the bottom, then allow soil to dry slightly between waterings.

Why are my peace lily leaves turning brown at the tips?▼

Brown leaf tips usually indicate low humidity rather than watering issues. Peace lilies need 40-60% humidity to thrive. Increase humidity with pebble trays, plant groupings, or a humidifier. Fluoride in tap water can also cause brown tips—use distilled water or let tap water sit overnight before using.

Can peace lilies bloom indoors?▼

Yes, mature peace lilies (2+ years old) bloom readily indoors with proper care. Provide bright, indirect light, consistent moisture, monthly feeding during growing season, and adequate humidity. Healthy plants typically bloom 2-3 times yearly, with white flowers lasting 4-6 weeks each. Avoid moving plants frequently once they're established and blooming.

Is peace lily toxic to cats and dogs?▼

Yes, peace lilies contain calcium oxalate crystals that are toxic to cats, dogs, and humans if ingested. Symptoms include mouth irritation, difficulty swallowing, and digestive upset. Place plants out of reach of curious pets and children. While rarely fatal, contact your veterinarian immediately if ingestion occurs.

How do I propagate peace lily plants?▼

Propagate through division during spring repotting. Gently separate the root ball into sections, ensuring each division has 2-3 leaves and its own root system. Plant divisions in well-draining potting mix and keep consistently moist until established. Division is more reliable than leaf cuttings, which have low success rates.

Why won't my peace lily flower?▼

Peace lilies need maturity (2+ years), adequate light (bright but indirect), proper nutrition (monthly feeding in growing season), and stable conditions to bloom. Plants that are too young, in too-low light, overfertilized with nitrogen, or frequently moved rarely flower. Be patient—established plants in ideal conditions bloom naturally without forcing.