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Why Are My Monstera Leaves Turning Yellow? (And How to Fix It)

Plant Doctor Team · Plant Care Guides

A yellow leaf on your monstera isn't automatically a crisis — plants shed older leaves as a normal part of growing. But if you're seeing more than one yellow leaf at a time, or new leaves turning yellow before they even fully unfurl, something in its environment needs adjusting. Here's how to tell which cause you're actually dealing with.

1. Overwatering (the most common cause, by far)

If the yellowing starts at the edges of a leaf and spreads inward, and the soil has been staying wet for days at a time, overwatering is almost always the culprit. Monstera roots need oxygen — sitting in soggy soil suffocates them, and a stressed root system can't support the leaf, so it yellows and drops.

Fix it: Check the soil with a finger 2 inches down before watering again — it should be dry at that depth, not damp. Make sure the pot actually has a drainage hole; a cache pot with no hole is one of the most common hidden causes of chronic overwatering. If the soil has been wet for over a week, gently unpot and check the roots — healthy roots are white-to-tan and firm; black, mushy, foul-smelling roots mean root rot, which needs trimming and a fresh, well-draining mix to recover.

2. Underwatering

Underwatered yellowing tends to look different: leaves go crispy and yellow-brown starting at the tips, and the soil pulls away from the pot's edges when dry. If your monstera has gone bone-dry for an extended stretch, this is the likely cause.

Fix it: Water thoroughly until it runs from the drainage hole, then let the top 1–2 inches dry before the next watering — usually every 7–10 days indoors, more often in a warm, bright room or during summer growth.

3. Too much direct sun

Monsteras are understory jungle plants — in the wild they grow under a forest canopy, not in open sun. Direct afternoon sun through a window can bleach and yellow leaves, sometimes with a papery, scorched look rather than a uniform yellow.

Fix it: Move it a few feet back from a south- or west-facing window, or add a sheer curtain to diffuse the light. Bright, indirect light — close to a window but out of the direct beam — is the sweet spot.

4. Nutrient deficiency

If your monstera has been in the same pot and soil for a year or more without feeding, yellowing (especially of older, lower leaves first, sometimes with the veins staying green) can signal it's simply run out of nutrients in the soil.

Fix it: Feed with a balanced liquid houseplant fertilizer at half strength every 4–6 weeks during spring and summer, and consider repotting into fresh soil if it's been more than 18 months.

5. Natural aging

If it's a single lower, older leaf turning yellow on an otherwise healthy, actively growing plant, that's often just the plant redirecting energy to new growth. Nothing to fix — just trim the yellow leaf off at the base once it's fully yellow.

Not sure which one it is? The honest answer is that these causes can look similar in photos, and guessing wrong often means over-correcting (like cutting water when the real issue was root rot). Plant Doctor's AI scan looks at your actual plant's leaf pattern and gives you a specific diagnosis and treatment plan in seconds — including a watering schedule tailored to your plant and light conditions.

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