No, you cannot start a peace lily from cutting the way you would with many other houseplants. Drop a single leaf or a piece of stem in a glass of water and watch what happens over the next two weeks. The base softens, turns brown, and goes mushy. It never grows a single root. The piece just rots in the water while you wait for something that will not come.
This trips up a lot of people, and you can see why. The leaves are thick and healthy. The stems feel sturdy. So you snip one, set it in water like you have done with other plants, and wait for roots that never show up. Peace lily cuttings look like they should work, but the result is always the same. A cutting has nowhere to grow roots from, so it cannot do anything but slowly fall apart in front of you.
The real reason comes down to one part the plant does not have. Roots form from nodes, which are tiny growth points along a stem. A pothos has these nodes spaced out all along its vines. If you cut a pothos just below one of those nodes and set it in water, roots push out within a week or two. The node does all the work, and that is why your pothos cuttings are so easy to start.
A peace lily has no nodes on its leaves or stems at all. Each leaf grows straight up from the crown at the base of the plant, on its own stalk. There is no point along that stalk where a new root can begin. So the piece you cut has zero ability to make roots, no matter how clean your knife is or how long you leave it sitting. That is the whole story, and it is why the water-glass trick fails you every single time.
Here is the part that surprises most people. The same plant that refuses to grow from a cutting will split into new plants with almost no effort. Your mature peace lily is really a cluster of separate crowns packed together in one pot. Each crown is its own little plant, with its own leaves and its own roots already attached. You do not need to grow anything new. You just have to pull what you already have apart.
The only method that works at home is to propagate peace lily by division. You separate those rooted crowns from each other. Slide the whole plant out of its pot and brush the loose soil off the root ball. Now you can see what you are working with. Look for natural clumps where the leaves group together. Tease the roots apart with your fingers. If the plant is packed in tight, cut straight down through the root mass with a clean knife.
Every new piece you make needs at least two healthy leaves and its own attached roots. A crown with leaves but no roots will fail the same way a cutting does, so check for roots before you separate it.
Once you have your divisions, pot each one in its own small container with fresh soil and give it a good drink. Keep the new plants out of direct sun for the first couple of weeks while their roots settle in. Some will droop a little at first, which is normal and nothing to worry about. They perk back up once they take hold in the new pot. Within a month you can have two or three full plants from the one you started with, and you never needed a cutting to get there.
Read the full article: Peace Lily Propagation: Easy Guide
