How to propagate peace lily

Spathiphyllum wallisii

Propagate peace lily by division. Roots in 21 to 42 days in soil. No node needed.

PREFERRED METHOD

division

The only method that works reliably for this species.

TIME TO ROOT

21–42 days

Roughly 3 to 6 weeks — middling for a houseplant. 14 of the 40 species in this database root more slowly.

NODE REQUIRED

Roots form from the cut tissue itself, so there is no node to find.

MEDIUM

soil

Not a water-rooting species. Keep the medium barely damp rather than wet.

BEST SEASON

Spring

Cuttings taken in active growth root faster and rot less than winter ones.

GROWTH HABIT

clumping

Habit is what decides which methods are available at all.

Why division works here

Not propagation from scratch so much as separation. Each piece already has its own roots and growing point, which is why the success rate is close to total.

Doing it

Unpot, find where the clumps separate naturally, and pull them apart by hand. Cut only what will not yield.

Where it goes wrong

Dividing too small is the usual error. A division needs enough roots to support its own leaves from day one.

DISPLAY — in-content responsive

Before you cut

The sap is not harmless. Peace lily is toxic to cats, dogs, and humans (insoluble calcium oxalates). Keep offcuts and rooting jars away from pets, and wash your hands. What that means for cats.
Take more than you need. Losses are normal. Three cuttings in one jar costs nothing extra and changes the odds.
Use a clean blade. Scissors crush the stem and crushed tissue rots. A craft knife wiped with alcohol is enough.
Do not fertilise a cutting. There are no roots to take it up, and the salts sit in the medium and burn what does form.

Also for this species

Full care entry — light, watering interval, soil recipe and difficulty, with sources. Toxicity to cats and to dogs.

Sources

Royal Botanic Gardens Kew, Plants of the World Online — Spathiphyllum wallisii Accepted name and family. Checked 2026-09-11.
ASPCA Animal Poison Control — Spathiphyllum wallisii Toxicity of sap and offcuts. Checked 2026-09-11.
Wikidata entity Q761494

Compiled and edited by Tony Valcarcel · 2026-09-12
Rooting times are typical ranges for indoor conditions, not guarantees. Warmth and light move them more than anything you do to the cutting. How this is sourced.