A common, tropical-looking houseplant, split-leaf philodendron (Monstera deliciosa) grows well outdoors in U.S. Department of Agriculture plant hardiness zones 10 through 11. Though it is typically propagated from air layering or stem cuttings, an overgrown or pot-bound split-leaf philodendron can also be propagated through root division. Ideally, divide the root ball in late winter or early spring just before it begins to grow again. Afterward, each divided section is ready for repotting or replanting.
Water a split-leaf philodendron one week before dividing its root ball. Water it thoroughly until the water comes out the drainage hole. In the garden, water the plant with 1 inch of water. Then, don't water again until after your repot or replant it.
Remove the split leaf philodendron from its container. Slide a knife or trowel between the container and soil. Tip the container on its side and carefully slide the entire plant out, grabbing hold of the soil. If necessary, carefully tug on the base of the plant, but do not pull too hard or you'll damage it. In the garden, dig out the plant, digging at least 8 to 10 inches deep and wide to remove the bulk of the root ball.
Lay the plant on its side on top of several layers of newspaper or a piece of cardboard. Examine the crown of the plant to look for natural divisions. Do this in the shade.
Divide the root ball where you see the natural divisions. Take a knife and cut down from the crown to the bottom of the root ball. Each split-leaf philodendron section should have a healthy part of the crown and roots.
Things You Will Need
- Newspaper or cardboard
- Prepare the new pot or planting location before you divide the root ball so you can plant it right away.