Propagating peace lilies is effortless and highly successful, yielding beautiful new plants. Divide mature plants at the base to isolate rhizomes with healthy roots. Remove and replant offsets, small shoots growing from the mother plant. For stem cuttings, trim stems with leaves and apply rooting hormone before planting. Peace lilies can also be grown from seeds, though this method requires more patience. All techniques thrive in warm, bright environments with proper watering and protection from overwatering and cold drafts.