Peace lily is Spathiphyllum. It is not a true lily. Clemson: the leaves rise directly from the soil. Iowa State, UNL, NCSU, UF/IFAS, and Illinois all point at division. UF also names basal shoots pulled from the mother plant. Those stay on this URL.

Illinois lists only division for Spathiphyllum, not stem or leaf cuttings. UNL’s table is division. NCSU’s recommended strategy is division.

For mix in a drained pot, see soil propagation. The generic houseplant split is on plant propagation.

Division

Iowa: take the plant out of the pot. Lay the root ball on its side and loosen it with your hands. A knife, spade, or saw if the ball will not pull apart. Each piece needs healthy leaves, stems, and roots. A larger piece recovers faster. A smaller piece gives you more plants. Pot in fresh mix in a container that fits the new piece, often smaller than the original. Water to settle the soil. Bright, indirect light. Wait a few weeks before fertilizing.

Iowa: early spring is ideal. Most houseplants on that page can be divided any time of year.

UF/IFAS: propagate by division in the spring.

UNL: division is the quickest way for plants that make stems at the base. Fingers or a knife. Each division should have some roots. Plants can be divided at any time; the dormant or rest period is best. Pieces with no roots may be rooted as tip cuttings. That is UNL’s line, not a cuttings how-to for this plant.

NCSU: re-pot, when necessary, in February or March. The plant likes to stay somewhat pot-bound.

Clemson: move up only one to two inches when the roots come through the holes or circle on the soil. Recovery is quicker in the growing season. Clemson does not name a propagate method.

Spring (UF), early spring or any time (Iowa), dormant or rest (UNL), February or March for a re-pot (NCSU) are not one date.

Offsets and basal shoots

Iowa: plants with several offsets or pups crowding the pot are good candidates for this split. Peace lily is on that division-and-offsets list.

UF/IFAS commercial guide (EP161): basal shoots can be separated from mother plants and potted in container mix. In production they also use tissue culture, and Spathiphyllum 'Cupido' is grown from seed there. Those last two are nursery methods. No home sowing steps here.

Pot a shoot that already has roots. UNL’s rule still applies: each piece should have some roots.

Common mistakes

  • A leaf or stem in a jar. Illinois, Iowa, UNL, and NCSU list division, not leaf or stem cuttings.
  • Tiny pieces with no roots. Iowa: each piece needs roots. Larger pieces recover faster.
  • A much bigger pot. Clemson: one to two inches larger, or the mix stays wet.
  • Treating Clemson’s 68 to 85 °F culture range as a numbered week-to-root figure. It is not.

People also ask

Can I root a leaf?

Illinois lists division only. Iowa and UNL list division. NCSU’s strategy is division. None of those pages give a leaf-cutting recipe for peace lily.

When do I divide?

UF/IFAS: spring. Iowa: early spring is ideal, any time can work. UNL: any time, with the rest period best. NCSU: February or March when you re-pot. Those are not one calendar.

What is a pup?

Iowa talks about offsets and pups crowding the pot. UF talks about basal shoots taken from the mother plant. Same URL.

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