My pothos had been trailing happily along the same shelf for over a year when I noticed the newest leaf had gone from healthy green to unmistakably black overnight. Pothos leaves turning black caught me off guard, since Epipremnum aureum has such a reputation for tolerating neglect.

I checked the soil first, assuming overwatering, but the roots looked fine, so I kept digging. Turns out black leaves can trace back to root rot, sunburn, cold drafts, fertilizer burn, poor drainage, pests, or disease, and figuring out which one matters more than panicking.

This guide walks through every common cause, how to spot it early, and exactly how to fix it before more leaves follow.

Why Pothos Leaves Turn Black

Black leaves rarely appear out of nowhere. In most cases, they’re the final stage of a stress signal that started earlier and got ignored. A leaf usually turns yellow or brown first, then slides into black once the tissue actually dies.

Catching that early yellowing or browning gives you a much better shot at saving the rest of the plant before the damage spreads further.

Common Causes of Pothos Leaves Turning Black

Overwatering & Root Rot

Overwatering is by far the most common reason pothos leaves turn black, and it usually starts underground before it ever shows up on the foliage. When roots sit in soggy soil for too long, they can’t access oxygen, and that suffocation leads to root rot.

Pull the plant out of its pot and the roots will feel mushy and soft instead of firm, often accompanied by a musty odor coming from the soil itself. Above the soil line, leaves typically yellow first, then slide into brown and finally black as the damage progresses.

If you catch it early, trim away any mushy roots with clean scissors and repot into fresh, well-draining soil. If most of the root system has turned to mush, the plant may not be salvageable, but any remaining healthy roots are worth trying to save.

Going forward, only water once the top two inches of soil feel dry.

Underwatering

It seems counterintuitive that both too much and too little water lead to the same black leaves, but underwatering causes damage through dehydration rather than rot. When a pothos goes too long without water, the leaf tips dry out first, turning brown and eventually black as those cells die off from lack of moisture.

The rest of the leaf often stays crispy rather than mushy, which is the easiest way to tell this apart from an overwatering problem. If you suspect underwatering, trim away the dead portions and give the plant a thorough soak by setting the pot in a sink or bucket of water for twenty to thirty minutes. This lets bone-dry soil rehydrate fully instead of the water just running straight through.

both too much and too little water lead to the same black leaves

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Direct Sunlight / Sunburn

Pothos evolved trailing along forest floors under a canopy of taller trees, so their leaves never adapted to handle intense, direct sun. When a pothos sits in a south-facing window with no filter, the leaf tissue can scorch, and scorched patches typically turn brown before darkening to black at the edges.

Unfortunately, this kind of sun damage is permanent, since burned tissue never turns green again.

The fix isn’t complicated: move the plant a few feet back from the window or add a sheer curtain to diffuse the light. Bright indirect light is what pothos actually wants, close enough to a window to get plenty of brightness without ever sitting in the sun’s direct path.

Cold Exposure & Temperature Stress

As a tropical plant, pothos has zero tolerance for cold. Temperatures dropping below 50°F cause real cell damage, and any exposed leaves or stems will darken to black fairly quickly once that threshold is crossed. This often happens quietly, a pothos leaning against a cold windowpane overnight, or sitting too close to a drafty door in winter.

The damage won’t reverse itself, so trim away blackened sections and relocate the plant somewhere warmer and more stable, ideally between 65 and 85°F. Keep pothos away from exterior walls, drafty windows, and air conditioning vents, since even brief cold snaps can stress the plant enough to trigger blackening on the most exposed leaves.

Overfertilization

More fertilizer doesn’t mean more growth, and pushing too much of it into the soil usually backfires. Excess fertilizer causes mineral salts to build up around the roots, and that concentration burns root tissue in a process that looks a lot like drought stress from the outside, even though the soil is plenty moist. Leaves affected by fertilizer burn often develop blackened edges or tips within days of a heavy feeding.

If you suspect this is the cause, flush the soil thoroughly with room-temperature water, letting it run through the drainage holes several times to wash out the excess salts. Hold off on fertilizing again for a few months, and when you resume, stick to a diluted, half-strength dose.

Poor Drainage

Even a careful watering routine can’t compensate for a pot or soil mix that traps moisture. Compacted potting soil or a container without drainage holes keeps water sitting around the roots long after you’ve stopped watering, creating the same soggy conditions that cause root rot.

Watch for water blisters on the leaves, a musty smell from the pot, or soil that stays wet days after watering, all signs drainage is the real problem. Repot into a fresh mix amended with perlite for better aeration, and make sure the container has drainage holes at the bottom, not the sides, so excess water can actually escape instead of pooling.

Pest Infestation

Sap-sucking insects like aphids, mealybugs, spider mites, and thrips pierce leaf tissue to feed, and in a heavy infestation, that damage can progress all the way to blackened, dying patches. Many of these pests also leave behind sticky honeydew, which attracts sooty mold, a black fungal coating that makes the problem look even worse than it already is.

Check the undersides of leaves and along the stems regularly, since that’s where most infestations start unnoticed. Treat any pests you find with insecticidal soap or neem oil, covering both sides of every leaf, and repeat the application every week or so until there’s no sign of activity left.

Disease

Compared to the other causes, disease is less common but tends to be more serious. Bacterial leaf spot and blight can both cause blackened patches, usually paired with a wet or water-soaked look around the affected area.

A more aggressive culprit is Phytophthora root rot, a fungal-like pathogen that attacks the roots and turns leaves dark brown to black as it spreads through the plant.

Early on, cut away infected leaves and stems to stop the spread. If the infection has taken hold throughout the plant, it’s usually safer to discard it entirely rather than risk it spreading to nearby houseplants, since these diseases are notoriously hard to eliminate once established.

How to Fix Pothos Leaves Turning Black

Once you’ve identified the likely cause, the fix usually follows the same general playbook, adjusted to match the specific problem.

• Trim away any blackened leaves or stems, since that damage won’t reverse.
• Check the soil moisture and roots to rule out overwatering or root rot first, since it’s the most common cause.
• Adjust your watering schedule, letting the top two inches of soil dry between waterings.
• Confirm the pot has proper drainage and amend compacted soil with perlite if needed.
• Relocate the plant away from direct sun, cold drafts, or heating vents.
• Flush the soil if recent fertilizing lines up with the timing of the damage.
• Treat any visible pests or disease promptly, then monitor for a few weeks.

How to Prevent Black Leaves in the Future

Most of this comes down to consistency rather than any single fix. Water on a steady rhythm, checking the soil before adding more rather than sticking to a fixed schedule. Use a well-draining soil mix in a pot with drainage holes, and place your pothos in bright, indirect light well away from direct sun exposure.

Keep the room temperature stable, ideally between 65 and 85°F, away from drafty windows and vents. Fertilize sparingly during the growing season only, at half-strength. Check the plant every week or two, since catching yellowing or browning early makes it far easier to stop it from progressing to black.

What are the signs of an unhealthy pothos?

Yellowing leaves, wilting, brown or black spots, stunted growth, leggy stems, and leaf drop are all early warning signs. Checking the soil and roots regularly helps catch problems before they progress to blackened leaves.

What should I do when leaves turn black?

Trim away the blackened portions, since that tissue won’t recover, then identify the underlying cause, whether it’s watering, light, temperature, fertilizer, pests, or disease. Adjust care accordingly and monitor the plant closely over the next few weeks for new growth.

How often should a pothos be watered?

Water once the top two inches of soil feel dry, which is usually every one to two weeks depending on light, humidity, and season. Always check the soil directly rather than watering on a fixed schedule.

Why are my pothos leaves turning black in water?

This almost always comes down to stagnant, oxygen-poor water that’s gone too long without a change. Refresh the water every week or two and rinse the container to prevent bacterial buildup around the stem.

Why are my pothos leaves turning black after repotting?

Poor drainage in the new pot or soil mix is the most likely cause, recreating the same soggy conditions that lead to root rot. Make sure the new pot has drainage holes and the soil mix includes perlite for aeration.

Why is my pothos turning yellow with black spots?

This combination usually signals more advanced overwatering, where yellowing has progressed into localized tissue death. At this stage, checking the roots and repotting into fresh, well-draining soil is typically necessary rather than simply cutting back on watering.

Can black pothos leaves turn green again?

No, once a leaf turns black the tissue has died and won’t recover its color. The best move is to trim it off and focus on giving the plant the right conditions so new, healthy leaves can grow in its place.

Your Pothos Can Bounce Back: Don’t Give Up on Your Pothos Yet

Black leaves on your pothos look alarming, but they’re almost always fixable once you identify the actual cause. Trim the damage, adjust the conditions, and give it time. With the right care, your pothos will fill back in and keep trailing like nothing happened.

Key Takeaways

• Overwatering and root rot are the most common causes of pothos leaves turning black, but sunburn, cold, overfertilizing, poor drainage, pests, and disease can all be culprits too.
• Black leaves won’t turn green again, so trim them and focus on new growth.
• Diagnose the cause before adjusting care.
• Catch yellowing early to prevent it.