Split-leaf philodendrons grow big, bold, and a little wild. Sooner or later, every owner looks at a sprawling plant with yellow lower leaves and long aerial roots and wonders where to start cutting.
Good split-leaf philodendron pruning is mostly about restraint. In this guide, I’ll show you which plant you actually have, when to cut, how to make clean cuts, and what to do with those roots and leaning trunks.
Which Split-Leaf Plant Do You Have
Most plants sold as “split-leaf philodendron” are either the tree philodendron (Philodendron selloum) or Monstera deliciosa. They need different pruning, so identify yours before you pick up a pair of pruners.
Both plants belong to the family Araceae, and both have large, deeply cut leaves. That’s where the confusion comes from. Garden centers often use the same common name for both.
The Tree Philodendron (Selloum)
The classic split-leaf philodendron is Philodendron selloum. Botanists have reclassified it as Thaumatophyllum bipinnatifidum, but most growers still call it selloum or tree philodendron.
Here’s how to recognize it:
- Leaves are deeply lobed along the edges, with ruffled, finger-like divisions.
- Leaves don’t have holes in the middle of the blade.
- Leaf stalks grow from a central point, forming a rosette.
- Over time, it develops a thick, upright trunk marked with old leaf scars.
- New growth always emerges from the top center of the plant.
That last point matters most. A selloum doesn’t branch like a shrub. It grows from one main growing point at the top.
Monstera Deliciosa
Monstera deliciosa is also sold as split-leaf philodendron, but it’s a different plant. It’s a climbing vine, not a self-heading, trunk-forming plant.
Look for these features:
- Leaves have splits that run from the edge toward the midrib.
- Mature leaves often have holes (fenestrations) inside the leaf blade.
- Stems grow along a vine with clear nodes spaced apart.
- It wants to climb a pole or support.
Because Monstera grows along a vine with spaced nodes, it’s much easier to cut back. You can trim a stem just above a node, and the plant can push new growth from there.
| Feature | Tree Philodendron (Selloum) | Monstera Deliciosa |
|---|---|---|
| Leaf shape | Deeply ruffled lobes, no holes | Splits plus interior holes |
| Growth habit | Upright rosette, thick trunk | Climbing vine |
| Where new growth comes from | Top center only | Nodes along stems |
| Easy to shorten? | No | Yes |
Both are popular choices among indoor plants with big leaves, and both reward a light hand when pruning.
Tools You’ll Want on Hand
Two products make this job easier and safer. My advice is to buy decent versions of each.
- Sharp bypass pruners: These cut with a scissor-like action and leave a clean cut. Avoid anvil pruners, which crush the thick, juicy leaf stalks.
- Garden gloves: The sap irritates skin, so a pair of snug, washable gloves is a must.
I’ll cover the full setup in the tools section below.
When to Prune
The best time to prune is spring or summer, when the plant is actively growing. Light, emergency trims are fine any time of year.
Active growth means faster healing and quicker replacement leaves. A plant cut in winter just sits there with fresh wounds and fewer leaves to make energy.
Spring and Summer Are Ideal
In spring and summer, your plant gets more light and warmth. It uses that energy to push out new leaves from the top.
That’s the season to do your main cleanup. Remove old lower leaves, tidy aerial roots, and take cuttings if you plan to propagate.
What About Fall and Winter?
Growth slows down a lot in the cooler months. During this time, the plant needs less water and little or no feeding.
You can still remove a fully yellow or dead leaf in winter. Just skip bigger jobs like heavy thinning or topping. While you’re at it, read up on watering philodendron in winter, since overwatering is a common winter mistake.
Signs Your Plant Needs a Trim
You don’t need to prune on a schedule. Prune when the plant tells you to.
Watch for these signals:
- Lower leaves turning yellow or brown.
- Damaged, torn, or pest-infested leaves.
- Leaves crowding walkways or furniture.
- Aerial roots getting tangled or reaching across the floor.
- A trunk that’s leaning heavily to one side.
If none of these apply, leave it alone. A healthy selloum doesn’t need regular pruning.
Tools and Safety
All you need are clean, sharp bypass pruners and gloves. The safety part matters more than the tools, because philodendron sap irritates skin and the plant is toxic to pets.
A few minutes of prep keeps you safe and keeps your plant free of disease.
Clean Your Pruners
Wipe your pruner blades with rubbing alcohol before you start. Do it again when you finish.
Clean blades reduce the chance of spreading bacteria or fungus between plants. If you’re cutting out a diseased or pest-damaged leaf, wipe the blades again before the next cut.
Make sure the blades are sharp. Dull pruners tear tissue, and torn tissue heals slowly.
Protect Your Skin and Eyes
The sap of philodendron contains insoluble calcium oxalate crystals. These can irritate skin, eyes, and mouth.
My safety checklist:
- Wear gloves for every cut.
- Wear long sleeves if you’re working on a big plant.
- Avoid touching your face while you work.
- Wash your hands and tools when you’re done.
- Lay down newspaper or a drop cloth to catch dripping sap.
If sap gets in your eyes, rinse well with water. If irritation doesn’t go away, contact a doctor.
Keep Pets and Kids Away
The ASPCA lists philodendron as toxic to cats and dogs. Chewing on leaves or stems can cause mouth irritation, drooling, vomiting, and trouble swallowing.
Clean up all trimmings right away. Don’t leave leaves on the floor where a curious pet might chew them.
If you think your pet ate some, call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435.
| Tool or Item | Why You Need It |
|---|---|
| Sharp bypass pruners | Clean cuts on thick leaf stalks |
| Garden gloves | Protects skin from irritating sap |
| Rubbing alcohol | Sanitizes blades before and after |
| Drop cloth or newspaper | Catches sap and debris |
| Trash bag | Keeps trimmings away from pets |
How to Remove Old and Yellow Leaves
Cut yellow or old lower leaves at the base of the leaf stalk, close to the trunk. This is the most common and most useful kind of split-leaf philodendron pruning.
It’s normal for a selloum to shed its oldest leaves as it grows. Removing them keeps the plant tidy and focuses energy on new growth.
Figure Out Why the Leaves Are Yellow
Before you cut, find out why the leaf turned yellow. One old leaf at the bottom is normal aging. Several yellow leaves at once usually point to a care problem.
Overwatering is the most common cause. Other causes include:
- Natural aging of the oldest leaves.
- Low light.
- Cold temperatures or drafts.
- Underwatering.
- Low nutrients.
- A root-bound pot.
- Pests.
Check the soil first. Water only when the top 1 to 2 inches are dry, then water until it drains out the bottom.
Also check for pests on leaf undersides. Mealybugs, scale, aphids, thrips, and fungus gnats can all cause trouble. If you see fine webbing or tiny speckles, read my guide on spider mites on indoor plants.
Make the Cut
Once you know the cause, removing the leaf is simple.
Follow these steps:
- Put on your gloves.
- Follow the yellow leaf’s stalk down to where it meets the trunk.
- Position your bypass pruners close to the trunk, but don’t cut into it.
- Make one clean, firm cut through the stalk.
- Remove the leaf and dispose of it safely.
Don’t pull or tear leaves off by hand. Tearing can damage the trunk and leave a ragged wound.
Some leaves will dry and drop off on their own. If a stalk comes away with a gentle tug, that’s fine. If it resists, cut it.
Don’t Overdo It
Take no more than about a quarter to a third of the leaves at one time. Leaves make the plant’s food, so removing too many weakens it.
If more than a third of your plant looks bad, remove the worst leaves first. Wait a few weeks, fix the care issue, and then remove more.
Partly yellow leaves still make some energy. If a leaf is only a little yellow, you can leave it until it’s mostly spent.
Dealing With Aerial Roots
Aerial roots can be trimmed or guided into the soil. Both options are safe, so choose based on how the plant looks and where it’s growing.
These thick, rope-like roots are normal. In the wild, the plant uses them for support and to pull in moisture.
Guide Them Into the Soil
My advice is to keep healthy aerial roots when you can. Once they reach the soil, they help anchor the plant and support the trunk.
Gently bend long roots down toward the pot. Tuck the tips into the soil surface. You can hold them in place with a soft plant tie or a U-shaped pin.
If the pot is small, the roots may not fit. In that case, trimming is the better choice.
Trim the Ones in the Way
You can cut aerial roots that cross walkways, wrap around furniture, or look messy. Trimming them won’t harm a healthy plant.
Here’s how:
- Cut with clean bypass pruners.
- Snip close to the trunk, or shorten the root to a tidy length.
- Remove dried, dead, or damaged roots completely.
- Don’t remove every root at once on a large, leaning plant.
Leave a few roots in place if your plant is top-heavy. They act like natural guy wires.
When Aerial Roots Signal a Problem
A plant that’s suddenly pushing out lots of aerial roots may be looking for moisture or support. That’s not always a problem, but it’s worth a quick check.
Look at the pot. If roots are circling the bottom or poking out of drainage holes, it’s likely root-bound.
Also check the humidity. Around 50% or more is ideal, though average home humidity works fine for most plants.
| Aerial Root Situation | What to Do |
|---|---|
| Healthy, reaching toward soil | Guide into the pot |
| Blocking walkways | Trim |
| Dry, dead, or damaged | Remove completely |
| Supporting a leaning trunk | Keep |
| Too many for the pot | Trim some, consid |