How to Propagate an Overgrown Split Leaf Philodendron

My office no longer had room for this lovely large plant. No one knows what it is. It has done well with weekly watering. Now seems crowded in pot. When can it be repotted? It has numerous runners (?). I was unsuccessful at getting roots to grow from cut leaf. Can it be divided? Thank II for your help. Also, I have it protected from my dogs by a gate that you see in photos.

Hi Liz,

Your plant is a split leaf philodendron. It’s good you have a gate because these plants are poisonous and should be kept away from pets and children. Read more about common houseplants that are poisonous in Don’t Feed Me To Your Cat! A Guide to Poisonous Houseplants.

The best way to propagate is by stem cuttings. To be successful, be sure to include a few leaves and a few plant nodes on each stem cutting. The roots grow out of these nodes. Here are the complete care steps.

Use a sharp, clean scissors or razor blade to cut a 4”-6” piece from the end of a healthy stem just below a leaf node. A node is where a leaf joins the stem. Remove leaves from the bottom 1/3 of the stem. Dip the cut end of the stem into a smallamount of Rooting Hormone that contains a Fungicide. Plant the stem in a 4″pot (drip holes in the bottom) of moist potting soil. Cover the pot with clear plastic to increase the humidity and prevent the soil from drying out. Check the plant every few days to be sure the soil stays moist. Tug on the stem cuttings after a few weeks, if there is resistance, roots have developed, the plastic can be removed, and the propagation was successful.

You can also divide the root ball, but then the plant would still be quite spindly.

You can read all my care tips for a split leaf philodendron in the Popular Houseplant section of the website.