Yellow Leaves on Pothos: Identifying Causes and Implementing Fixes

Epipremnum aureum, commonly known as pothos and a member of the Araceae family, has been a beloved houseplant across the United States for nearly a century. Appreciated for its resilience and decorative appeal, pothos makes a frequent addition to homes and offices.

Should you notice yellowing in your pothos leaves, a good starting point is to identify the specific type of pothos you have, as some varieties like the Golden Pothos or Neon Pothos naturally feature yellow or chartreuse leaves.

However, if the yellowing indicates a health issue, don't worry. By pinpointing and addressing the underlying problem, you can often restore your pothos to its lush, green state.

Why are the leaves of my Pothos turning yellow?

If the leaves of your pothos are turning yellow, it could be due to one of these common reasons:

Overwatering

Yellowing pothos leaves often signal root rot due to soil saturation. This can stem from frequent watering, inadequate drainage, or dense soil types. In cases of pythium root rot, you'll notice black, soft roots and the older leaves turning yellow and detaching.

To address root rot in your pothos, start with the roots. Use scissors sanitized in a solution of one part bleach to nine parts water to remove affected leaves. Clean the scissors after each cut to prevent spreading disease. Remove the plant, trim away all decayed, mushy roots, then cleanse the pot. After washing the roots, replant in fresh, well-draining soil.

Place the plant in an area with partial sunlight and ensure proper soil drainage to prevent future overwatering. Avoid spraying the plant directly to reduce moisture on leaves, deterring root rot fungi.

Prevent root rot by enhancing soil drainage and modifying watering habits. Wait for the top inch of soil to dry before watering again.

Inadequate Drainage

Inadequate drainage may result in waterlogged roots or root rot in your pothos, leading to leaves turning yellow. Ensure your plant is in a container with a well-draining soil mix.

If your current pot lacks proper drainage, doesn't have drainage holes, or is made from non-porous materials like plastic, switch to a pot made of terracotta or unglazed ceramic that includes drainage holes. Also, consider replacing the potting soil when transitioning your plant to the new pot.

Excessive Sunlight Exposure

Too much sunlight can cause your pothos plant's leaves to turn yellow, with signs including bleached areas or yellow patches. If the damage is significant, remove the affected leaves; if not, allow the plant to produce new foliage that will eventually hide the older, damaged leaves. Should you observe bleaching, consider using a sheer curtain or relocating the plant to a spot with less direct sunlight.

Old Age

As part of their natural life cycle, pothos plants will typically lose their older leaves, which turn yellow before detaching. This is a common process across different pothos varieties and is an integral part of the plant's growth and renewal. The yellowing of leaves is mainly observed in the older foliage near the base, while the vibrant, healthy leaves usually remain at the end of each vine, signifying a healthy plant.

To ensure the plant remains vigorous and to stimulate new growth, regular, gentle pruning is beneficial. This involves cutting back the stems to about 2 inches from the soil line. Not only does this help in removing the aged, yellowing leaves, but it also encourages the plant to branch out and become fuller. Remember, this light pruning helps maintain the aesthetic appeal of the plant and promotes a lush, green appearance.

Temperature Impact

Leaves turning yellow can often be attributed to exposure to air significantly warmer or colder than the plant's usual environment. This can be due to drafts coming through windows or doors, as well as air from heating and cooling vents. To avoid premature yellowing of your pothos leaves, it's advisable to keep the plant away from vents and areas in your home that experience drafts.

Manganese Toxicity

Manganese toxicity should be monitored, particularly as it tends to impact older pothos plants more than younger ones. This condition arises from excessive manganese present in the soil, different from issues like bacterial wilt or southern blight that affect juveniles.

This toxicity often originates from nursery plants over-absorbing manganese through commercial fertilizers. If you suspect manganese toxicity, cease applying fertilizers containing manganese — check for 'maneb' or 'mancozeb' in the ingredient list. Also, steer clear of fertilizers with 'trace elements.' To mitigate this issue, amending the soil with lime can promote healthier plant growth.

Pest Infestations 

Stressed Pothos are prone to pest attacks, such as spider mites and mealybugs, which cause leaf yellowing. If you notice pests, isolate the affected plant to prevent spreading. Treat by gently wiping the leaves with a soap and water solution or applying neem oil, a natural deterrent. For severe cases, use suitable pesticides as directed. Boost the plant’s health to deter pests by ensuring proper lighting, watering, and nutrients, making it more resistant to future infestations.

Nutrient Deficiencies

Yellowing of leaves can be a sign of nutrient imbalances in the soil. Over-fertilization can deteriorate soil quality, leading to yellow leaves.

Opt for indoor plant-specific potting soil and refresh it during repotting sessions. Pothos typically requires minimal fertilization—apply a balanced fertilizer monthly only in the active growth season, and avoid fertilizing in winter.

Preventing Yellow Leaves in Pothos Plants

To avoid yellowing leaves, it's crucial to provide your pothos with an environment that promotes healthy growth. Although this plant is adaptable to various conditions, it thrives best in indirect sunlight, with well-draining soil, and requires watering once every one to two weeks. Creating the ideal living conditions minimizes the stress inflicted on your plant. It's important to note that stress can have a cumulative impact on your pothos, leading to a continuous decline in health until it may eventually perish. Addressing stress factors early on can prevent this negative progression and keep your plant looking vibrant and healthy.

Faqs

Why are the leaves on my pothos turning yellow?

Yellow leaves can result from several factors, including overwatering, inadequate light, nutrient deficiencies, or even pest infestations. Identifying the specific cause is crucial for effective treatment.

Can yellow leaves on my pothos turn green again?

Once a leaf turns yellow, it's unlikely to revert to green. It's best to address the underlying issue causing the yellowing and ensure new growth is healthy.

How often should I water my pothos to prevent yellow leaves?

Pothos plants typically need watering every one to two weeks, but this can vary based on environmental conditions. Always check the soil's moisture level before watering; it should be dry to the touch.

Is direct sunlight harmful to pothos plants?

Yes, direct sunlight can be harmful and may lead to yellowing leaves. Pothos prefer bright, indirect light. If your plant is exposed to direct sunlight, consider relocating it or using sheer curtains to filter the light.

What should I do if I suspect my pothos have a nutrient deficiency?

If you suspect a nutrient deficiency, consider using a balanced liquid fertilizer every 4-6 weeks during the growing season. Be careful not to over-fertilize, as this can also lead to yellowing leaves.