How to Care for a Peace Lily: Complete UK Guide

The peace lily, Spathiphyllum, is a graceful, low-maintenance houseplant well suited to UK homes, thriving in medium to bright indirect light with consistently moist, but not waterlogged, compost. Its leaves droop dramatically when thirsty, giving an unmistakable cue to water, and with enough light it rewards you with elegant white flower spathes through spring and summer.

Choosing a healthy plant and varieties

Choose a plant with dark green, glossy leaves free from brown patches or yellowing, and check for any white flower spathes already forming, which indicate the plant is mature and in flowering condition. Avoid plants with limp, collapsed leaves or compost that smells sour, as these suggest root problems.

Light and position

Peace lilies tolerate medium and even fairly low light, which is why they are popular for offices, but they only flower reliably in bright, indirect light, such as near an east-facing window. Avoid direct sun, which scorches the leaves, and in UK winters, move the plant closer to a light source to compensate for shorter days.

Watering

Water thoroughly once the compost surface feels just dry, roughly once a week in summer and every 10-14 days in winter, but let the leaves guide you. A slight droop means it is time to water; once watered, the leaves typically recover within a few hours. Avoid letting the plant sit in a saucer of standing water, as this leads to root rot over time.

Humidity and temperature

Peace lilies are native to tropical rainforests and appreciate high humidity, which can be provided through regular misting, a pebble tray, or grouping with other plants, particularly important in centrally heated UK homes over winter. Keep temperatures between 18-27°C and away from cold draughts or radiators, both of which cause brown, crispy patches.

Feeding

Feed every four to six weeks during spring and summer with a balanced liquid houseplant feed diluted to half strength, as peace lilies are sensitive to over-fertilising, which can cause brown leaf tips. Stop feeding entirely from autumn through winter while growth slows.

Potting mix and repotting

A rich, moisture-retentive but free-draining mix suits peace lilies best.

1. Choose a pot only slightly larger than the current one, with drainage holes.
2. Use a peat-free houseplant compost, adding a little perlite for drainage.
3. Gently remove the plant and loosen any tightly bound roots.
4. Position at the same depth as before and backfill with fresh compost.
5. Water well and repot every one to two years in spring.

Pruning, cleaning and support

Remove yellow or damaged leaves at the base with clean scissors, and cut spent flower spathes off at their stem once they have turned green and faded. Wipe leaves regularly with a damp cloth to remove dust and help the plant photosynthesise efficiently. Peace lilies are self-supporting and rarely need staking.

Propagation

Peace lilies are easiest to propagate by division at repotting time.

1. Remove the plant from its pot and gently shake off excess compost.
2. Identify natural clumps, each with its own roots and leaves.
3. Use your hands or a clean knife to separate sections carefully.
4. Pot each division into fresh, moisture-retentive compost.
5. Water well and keep in warm, indirect light until established.

Common problems

Seasonal care calendar

For more flowering houseplant ideas, visit our plants section, or read our how-to guides for further seasonal care advice.