Pothos Leaves Turning Black: Everything You Should Know

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Pothos is one of our favorite low-maintenance indoor plants. However, it doesn’t mean that you never have any problems with pothos. One of the popular issues you may have is pothos leaves turning black. It occurs due to many reasons during the caring process. Let’s examine the precise reason for your pothos black leaves and, more significantly, how to solve it.

What Does Leaves Turning Black Look Like?

As its name suggests, the color of your Pothos leaves will turn black. You can’t see the green hue of healthy foliage. The plants may have some yellow spots at first. If untreated, these marks grow into black ones.

If the situation is minor, you may notice some dark spots on a specific part of your plants. These black spots may initially be brown and appear at the tips and edges of the leaves. The best solution at this time is to apply appropriate treatments. Otherwise, these spots gradually spread around the whole plant. As a result, the root system of your Pothos may appear to have an unpleasant rotten egg smell.

Yet, your plants may show different signs depending on the root causes. Thus, scroll down and determine the culprits and get some fixes!

Further reading:

Pothos leaves turning black after yellowing signs shown

Pothos Leaves Turning Black: Causes And How To Fix

It is devastating when your lovely Pothos begins to turn black while you couldn’t figure out what is wrong.

When you notice Pothos leaves turning black – What to do? Before applying the remedies, it is crucial to determine the exact culprits.

Don’t worry! Here are some potential causes for and treatments for the blackening leaves. Let’s look through it!

Water

Inappropriate watering is the leading cause of indoor plant issues. This plant species is not an exception. Your plants may suffer from insufficient moisture levels, whether excessive amounts of water or not enough. It doesn’t matter what kind of Pothos you have because they all need nearly the same requirements for watering.

Overwater

Although these tropical plants prefer damp soil, they need a brief drying period after watering to prevent waterlogging. Inadequate drainage or excessive moisture in the container might create root rot or other problems that could turn the leaves black.

You will often get an obvious warning sign if you overwater your plants:

  • The leaves start turning yellow before gradually developing dark brown and black spots.
  • You will notice root rot or an unpleasant rotten egg smell.

How to fix:

  • Water your plants less. It’s better to water them once or twice a week, depending on the humidity and temperature in your region.
  • Ensure the soil completely dries before watering to avoid root rot.
  • Always prioritize drainage. You can check the moisture by pressing one finger into the ground.
  • The drainage is adequate if the potting mix is roughly one inch deep.

Further reading:

Underwater

The leaves will wilt if they don’t get enough water. During the summer days, it’s common for these plants to wilt suddenly.

Your pothos may die if they continue receiving insufficient water for a prolonged time. Underwatering will also change the color of the leaves. You will notice the tips turning brown first, gradually blackening on the whole leaf, causing the foliage to die off.

How to fix:

  • Trim heavily damaged parts.
  • Water the plants more regularly, especially in hotter months.
  • It’s best to water from the bottom. You can place your Pothos in a bucket or a sink.
Trimming and watering regularly

Light

Although these plants typically flourish in bright spaces, problems may occur if you put them under direct sunlight for too long.

An overabundance of light can cause scorching, which is displayed by withering and browning of the leaves and makes your Pothos stressed.

In essence, the burning of plant cells by the harsh sun’s rays causes the leaves of pothos to become darker.

How to fix:

  • If you want to prevent this issue, ensure your plants are in a location with enough light but keep them out of direct sunlight.
  • Do not be hesitant to relocate your plants into other areas that are darker since they can flourish there.
  • Always ensure the space you put your plants in has slightly natural light.
  • Sadly, burned foliage never recovers completely. It is advisable to prune them to focus the plant’s efforts on developing new, wholesome growth.

Read more: Pothos Leaves Turning Brown: 6 Ways To Save Your Plant

Infestation

Besides the above factors, your plants may suffer from natural culprits, including pests and diseases.

Pest

Insects or fungi may also be to blame for the blackening of leaves. Several fungal infections may come from external factors.

It can be from human fingers, other plants, and havoc bugs visiting, such as mealy bugs, spider mites, or aphids.

Little white pests will eventually kill your pothos by turning their leaves yellow. After that, these insects eat and destroy the plant cells, making your Pothos more vulnerable and blackening.

How to fix:

  • Treating pests using rubbing alcohol, neem oil, or home remedy is easy.
  • It’s better to repot your plants into a new container with a fresh potting mix.
  • Use cotton swabs to wipe off the leaves from bugs gently and rinse them.

Diseases

Some diseases, such as aerial blight or Rhizoctonia stem rot, may attack your Pothos, causing the stems and leaves to blacken if the problem escalates.

During the hottest times of the year, many illnesses are widespread. They’ll make the plant’s foliage wilt and blacken the leaf veins.

How to fix:

  • Unfortunately, it’s relatively easy to control diseases in this plant species. You can prune some slightly damaged parts.
  • You can also combine various treatments, including fungicides, disinfect, insecticidal soaps, and horticultural oil.
  • However, if the situation worsens, throwing that plant to prevent spreading diseases to healthy Pothos is best.
Repair treatment for these diseases

Over-Fertilizer

When grown in greenhouses, Pothos frequently already have effective fertilizer. Therefore further fertilization isn’t usually necessary.

Pothos require nutrients to flourish, like all other species. However, if you use too much fertilizer, your pothos will suffer some issues.

The leaves will droop, wilt, and eventually turn black due to fertilizer burn.

How to fix:

  • After fertilizing, if you soon detect black leaves, immediately rinse the potting mix with distilled or filtered water.
  • Establish a balanced fertilizing schedule.

Other Causes

Many other factors make the leaves turn black apart from water, light, infestation, or fertilizer. Humidity and temperature are the two culprits causing your plants’ foliage to blacken.

Humidity

Pothos plants are native tropical species, so they appreciate and love to be in high humidity. During the cold months, when the humidity reduces significantly, the foliage of your Pothos may turn brown and black.

How to fix:

  • You can place your Pothos pots onto pebble trays to improve the moisture.
  • Invest in a humidifier to increase the humidity level in the space you keep your plants.

Temperature Shock

Due to their ability to adjust to fluctuations in temperature, pothos makes excellent indoor plants. However, it’s not always the case, which means your Pothos may suffer temperature shock if the temperature increases or drops suddenly over their tolerance threshold.

If the temperature exceeds too far from their optimal range, they may not operate properly, and their leaf cells may become black.

How to fix:

  • The fastest and most straightforward solution is to relocate your Pothos to another place within an optimal temperature range.
  • It’s best to maintain the temperature around 60 – 85°F.
temperature control for healthy plant

Frequently Asked Questions

Here are some frequently asked issues about Pothos:

Which Part Of The Pothos Is Toxic?

All parts of Pothos are toxic because they contain calcium oxalate crystals. Your pets or children may suffer a burning feeling, immediate pain, or swelling of the mouth, lips, throat, or tongue if they accidentally eat or chew them.

Should I Cut Off Black Leaves From Pothos?

The short answer is yes! It’s the fastest and easiest way to stop diseases from spreading to other healthy plants and focus nutrients on new growth.

Is Leaf Spot Contagious?

The bad news is yes. This disease is contagious. The pathogen develops and spreads when overwatering, irrigation, or rain. Besides, infected soil movement, contact with unhealthy plants, equipment from harvesting, leaf pruning, or people may cause the disease to spread.

Kelly Lawrence

Kelly Lawrence

I’m Kelly Lawrence, two years after graduating with a Journalism major, I had the opportunity to apply my experiences to become the founder and executive content writer of this gardening blog.