How to grow peace lily
Overview
Peace lily (Spathiphyllum wallisii) is a herbaceous perennial grown for its glossy dark green leaves and elegant white spathes. It thrives in low light and is a popular choice for indoor pots and shaded patios, but needs consistent warmth to flower well.
Varieties
- Spathiphyllum wallisii 'Mauna Loa' — Large-flowered variety with broad white spathes, popular in Australian nurseries for its robust growth.
- Spathiphyllum 'Sensation' — Extra-large leaves and tall stems, ideal for a bold indoor statement in temperate and subtropical homes.
Soil Preparation
Use a loose, well-draining potting mix with a pH of 5.5–6.5. Amend with peat moss or coco coir to retain moisture, and add perlite or coarse sand for drainage. Avoid heavy clay soils that hold water and cause root rot.
Growing Guide
Plant peace lily in a well-draining potting mix rich in organic matter, in a pot with good drainage. Space plants 30–40 cm apart if grouping in a bed. Keep the soil consistently moist but never waterlogged; water when the top 2 cm feels dry. Avoid direct afternoon sun—bright indirect light or dappled shade is best. In cooler zones, grow in a container that can be moved indoors over winter.
Care
Feed monthly in spring and summer with a balanced liquid fertiliser (e.g., 10-10-10) diluted to half strength. Remove spent flower stems at the base and trim yellowing leaves to keep the plant tidy. Wipe leaves with a damp cloth every few weeks to remove dust and improve photosynthesis.
Companion Planting
Pair peace lily with ferns (e.g., Boston fern), calathea, and philodendrons for a lush tropical look. Avoid planting near heavy feeders like citrus or plants that need full sun, as peace lily prefers low light and steady moisture.
Common Pests & Risks
Mealybug scale and fungus gnats are common on peace lily. Mealybugs appear as white cottony clusters on leaf axils; treat with neem oil or insecticidal soap. Fungus gnats thrive in overwatered soil—allow the top layer to dry out between waterings and use yellow sticky traps.
Troubleshooting
Yellow leaves: overwatering or poor drainage—let soil dry out slightly. Brown leaf tips: low humidity or fluoride in tap water—use filtered water or mist leaves. Drooping stems: underwatering—water thoroughly and check soil moisture. No flowers: too little light—move to a brighter spot with indirect light. Black spots on leaves: fungal infection from wet foliage—improve air circulation and avoid overhead watering.