Natural Growth
Some Philodendrons — especially large, split-leaf or Monstera-like types — naturally develop holes (fenestrations) in their mature leaves. This is a normal growth pattern that helps the plant capture light more efficiently in its natural environment.
If your plant is otherwise healthy and pushing out new leaves with evenly shaped holes, there’s nothing to worry about.
Physical Damage
Tears and ragged holes can also result from physical damage. Leaves may rip during repotting, pruning, or even from brushing against walls, furniture, or curious pets.
Since Philodendron leaves are fairly delicate, try to handle them gently and give your plant enough space so the foliage isn’t constantly rubbing against anything.
Pests
Chewing insects like caterpillars, beetles, or even snails can sometimes be the cause of leaf holes. While less common indoors, they can sneak in if your plant spends time outside.
Check both sides of the leaves for signs of pests, as well as any sticky residue or tiny bite marks. If you spot them, isolate your plant and treat with insecticidal soap, neem oil, or by gently wiping pests off by hand.
Environmental Stress
Drafts, strong airflow, or sudden swings in temperature can cause Philodendron leaves to tear. This happens most often with young or tender leaves that haven’t fully hardened.
Keep your plant in a stable indoor environment, away from open windows, AC vents, or heating units to reduce the chance of damage.
Nutrient Deficiency
If your Philodendron isn’t getting enough nutrients, its leaves may grow thinner and more fragile, making them prone to tearing. A balanced liquid fertilizer during the growing season (every 4–6 weeks) helps strengthen new leaves and reduce the risk of damage.
When It’s Normal
Remember: if your Philodendron variety is known for split or fenestrated leaves, holes are completely natural. Even small imperfections on older leaves aren’t usually cause for concern as long as new growth looks healthy and vibrant.
