Peace Lily (Spathiphyllum)

July 23, 2026

Quick Overview

🌞 LIGHT: Medium to bright, indirect light (tolerates low light, but needs indirect light to bloom).
💧 WATERING: Water when the top 50% of soil (top 1–2 inches) is dry; droops dramatically when thirsty.
🌡️ TEMPERATURE & HUMIDITY: 65–85°F (18–29°C) & 50%+ humidity.
🌱 SOIL: Loose, rich, well-draining potting mix with a drainage hole.
❗ SAFETY NOTE: Toxic to pets and humans if ingested (contains insoluble calcium oxalate crystals). Keep out of reach.

Tolerates: Low indirect light conditions, making them ideal for dim indoor spaces.
Avoid: Harsh, direct afternoon sunlight, which easily scorches the deep green foliage and turns leaf edges brown.
Bloom Tip: While they survive in low light, bright indirect light is required to trigger continuous white flowers (spathes). Variegated types (like 'Domino' or 'Picasso') also need bright light to maintain their white striping.

Frequency: Typically every 7–10 days in spring and summer, extending to every 10–14 days during winter.
Avoid: Letting the pot sit in soggy drainage water, which leads quickly to root rot and soft, black stems.
The "Drama" Flag: Peace Lilies will droop severely when thirsty, looking almost dead. Give the soil a thorough soak, and the leaves will perk back up fully within a few hours.
Water Quality: Sensitive to chlorine and fluoride in municipal tap water, which causes crispy leaf tips. Use room-temperature filtered, distilled, or rainwater.

Draft Sensitivity: Protect from cold winter drafts, open doors, and direct AC vents. Temperatures below 55°F (13°C) cause dark foliage damage and cold shock.
Humidity Boosts: Loves high humidity (50–70%). Place on a pebble tray or run a nearby humidifier to keep leaf tips crisp-free and glossy.

Soil Mix: Needs a moisture-retentive yet well-draining substrate. Combine 2 parts standard potting soil, 1 part perlite or pumice, and 1 part peat moss or coco coir.
Repotting: Prefers staying slightly root-bound to produce flowers. Repot every 1–2 years in spring, stepping up only 1–2 inches in pot size or dividing large clumps.

Routine: Feed once every 4–6 weeks during active spring and summer growth using a balanced liquid houseplant fertilizer diluted to half-strength.
Rest Period: Hold off on fertilizing during autumn and winter when growth cools down.

Pruning: Trim fading green or browning flower stalks at the base with clean shears. Snip off any yellow or damaged lower leaves near the soil line.
Cleaning: Gently wipe broad, glossy leaves with a soft, damp cloth to remove dust and maximize light absorption.

Crown Division:
1. Gently remove the plant from its pot during spring repotting.
2. Locate natural divisions where crown offsets have formed their own distinct stem and root system.
3. Carefully separate or slice the crowns apart using a clean knife.
4. Pot individual divisions into fresh damp mix and keep warm in bright, indirect light.

Problem / Pest	Visual Symptoms	Solution
Root Rot	Soft black stem bases, yellowing leaves, foul soil odor, failure to recover after watering.	Trim away mushy roots, repot healthy sections into fresh dry mix, and allow topsoil to dry slightly more between waterings.
Mealybugs & Scale	Small white cottony specks or waxy brown bumps on leaf undersides and along flower stems.	Wipe pests off manually with a damp cloth or cotton pad, then treat with mild soapy water or insecticidal soap.
Spider Mites	Fine webbing on leaf undersides and stem joints, dull speckled leaves.	Isolate plant, rinse leaves thoroughly under lukewarm running water, and spray with insecticidal soap or horticultural oil.
Crispy Brown Tips	Dry, brown ends on the tips of leaves.	Caused by tap water chemicals (fluoride/chlorine), low humidity, or letting soil dry out too far. Switch to filtered water and boost humidity.
Yellowing Leaves	Uniform yellowing across lower foliage; soft soil.	Classic sign of overwatering or poor soil aeration. Allow the top half of the soil to dry out before watering again.