A yellow leaf on a monstera (Monstera deliciosa) is the plant’s way of saying something is off. The good news: it’s almost always one of seven causes, and all of them are fixable.
Work through them in order — from most common to least — and stop at the first one that matches your plant.
1. Overwatering (most common)
Yellow leaves + wet soil = too much water. Monstera roots need air; constantly damp soil suffocates them, and the oldest leaves turn yellow first.
Fix: Let the soil dry out completely before watering again. Check with your finger 3-4 cm deep — only water when dry. Empty the saucer after every watering.
2. Underwatering
Yellow + crispy brown edges and drooping stems means the opposite: the plant has been too dry for too long.
Fix: Give it a deep soak — water slowly until it runs out the drainage holes, wait 15 minutes, and water again. Then set a regular check.
3. Too much direct sunlight
Monstera loves bright, indirect light. Harsh afternoon sun scorches the leaves, and the yellowing starts with pale, washed patches.
Fix: Move it a meter or two back from the window, or filter the light with a sheer curtain. Morning sun is fine; 2-6 PM direct sun is not.
4. Nutrient deficiency
Yellowing starting between the veins — while the veins stay green — points to a lack of nitrogen or iron. This usually appears after a year in the same soil.
Fix: Feed with a balanced houseplant fertilizer (diluted to half strength) every 3-4 weeks during spring and summer. Repotting with fresh soil also resets the nutrients.
5. Root rot from poor drainage
If you’ve ruled out everything above, lift the plant and check the roots. Brown, mushy, smelly roots mean rot has set in — usually from a pot without drainage holes.
Fix: Repot into fresh, well-draining soil (add perlite or orchid bark) in a pot with drainage holes. Trim any rotten roots with clean scissors first.
6. Sudden temperature or location change
Monstera hates being moved. A new spot with different light, drafts, or a cold window at night can trigger yellow leaves on the shock.
Fix: Pick a stable spot and leave it there. Avoid placing it near heating vents or drafty doors in winter.
7. Natural aging
If only the lowest, oldest leaf is yellow and everything else looks healthy — that’s just the plant’s life cycle. Monstera sheds old leaves as it grows.
Fix: Nothing. Cut the yellow leaf at the base and enjoy the plant.
What to do right now
- Stop watering until the soil dries out — this alone fixes the majority of cases.
- Check the light — bright but indirect is the goal.
- Cut fully yellow leaves at the stem base.
- Wait two weeks — new growth or no further yellowing means you caught it in time.
Still unsure? Compare your plant’s pattern against our spider plant watering guide — the soil-checking method transfers to any houseplant — or grab the weekly plant care checklist to build a routine that prevents this before it starts.
