Why Is My Fern Turning Brown? Causes and Easy Solutions

“Why is my fern turning brown?” is a question that often plagues gardeners. Note that brown ferns can result from underwatering, improper drainage, and exposure to harmful chemicals.

However, there’s no need to get disheartened, as you can save your plants with easy methods. Stay with us to unearth effective solutions to ensure your ferns remain lush and healthy.

When Will Your Fern Turn Brown?

– Underwatering: One of the Most Common Reasons

One of the primary reasons behind the “Boston fern leaves turning brown and falling off” problem is underwatering. Plants, like ferns, need water for various physiological processes, like nutrient transportation and photosynthesis. They can’t carry out these essential functions when the water supply becomes inconsistent or insufficient.

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The signs of underwatering are more than just the appearance of brown leaves. The soil feels dry, and the plant might start wilting. Another clear sign of underwatering is the soil pulling away from the sides of the pot, indicating it’s been too long since the last watering.

– Improper Drainage

Another often overlooked factor causing distress in Boston ferns is improper drainage. If you’ve ever wondered, “Why is my fern turning brown and brownish yellow,” this could be the culprit.

Proper drainage ensures that excess water, which can harm the plant, is channeled out of the pot. The soil becomes waterlogged without adequate drainage, creating a breeding ground for mold and fungi. This soggy environment can lead to root rot, which can cause irreversible damage if not addressed promptly.

Moreover, when the roots of Boston or common asparagus fern are submerged in water for extended periods, they are deprived of essential oxygen. This suffocates the root tissues, leading to decay.

As the root system weakens, the fern’s ability to uptake nutrients diminishes, leading to symptoms such as browning and yellowing leaves.

There’s more. The stagnant water at the stem’s base can also become a breeding ground for pests. These pests can further damage the fern and worsen the plant’s health. Therefore, it’s crucial to check the drainage system of the plant pot and ensure there are no blockages.

– Disease Attacks

If you wonder, “Why are ferns turning brown in the middle,” your plants might suffer from diseases. Fungal infections hurt Boston ferns and change how they look. For example, root rot is a bad disease where the bottom parts of the fern (the roots) get too wet and then get sick. This can make your ferns turn brown in the middle and other parts.

– Transplant Shock (Post Repotting Stress)

People often ask us, “Why is my indoor fern turning brown after repotting?” Well, the thing is, when ferns move, they need time to adjust to their new home. If they don’t feel good after transplanting, the leaves turn brown. It’s like how we feel uncomfortable when we first shift to a new house.

– Lack of Humidity

There are many types of ferns, and some of them are very popular as indoor plants. The staghorn ferns are unique because they grow on trees in the wild. The adiantum capillus-veneris is another type of fern that people like because it has delicate leaves that look like lace. People also like the common asparagus and western sword fern because they are pretty and easy to care for.

Like many vascular plants, all these ferns have tubes that carry water from the root tissues to the leaves. The tubes can’t carry enough water when the air is too dry. As a result, the tips of the leaves become brown.

– Negligence During the Pruning

Pruning means cutting off parts of a plant. Sometimes, people do this to make a plant look better or to help it grow a certain way. But if you cut too much or incorrectly, it can turn fern brown.

So, if you’ve ever wondered, “Why are my hanging ferns turning brown,” incorrect pruning could be the reason. When you trim excessively, the fern might not have enough leaves to make food from sunlight.

In some cases, if the cuts on the stems are too big, the fern can lose too much water and dry out. That’s why learning how to prune each type of fern is always a good idea before you start cutting.

– Chemical Exposure: Last Main Cause

Sometimes, ferns come into contact with chemicals that aren’t good for them. These chemicals can be in the water, in the soil, or even in the air. Ferns touching or taking in these harmful substances can hurt them. So, if you’re thinking, “Why is my fern turning brown underneath,” you can’t rule out chemicals or pollutants.

For example, outdoor ferns can come into contact with things like pesticide sprays or fertilizers. Even if these chemicals are meant for other plants, they might not be suitable for the fern. The chemicals touching the plant leaves can cause burns or spots. Over time, the fern might look brown or sickly.

How to Fix Brown Fern Plants

– Apply Water in the Right Amounts

Water is like food for plants. Just like we need the right amount of food, plants need the right amount of water.

Here’s what to do:

• Check the soil: Before water, touch the soil with your finger. If the top inch of soil is dry, it’s time to water. If it’s wet, wait a day or two.
• Water deeply: When you water, ensure the water goes deep into the soil. This helps the roots get all the water they need.
• Be consistent: Ferns like a regular watering schedule. Try to water them simultaneously every other day or twice a week. This helps them know when to expect water and keeps them happy.

– Change the Soil if it is In Bad Condition

Bad soil has two problems- It might not have the proper nutrients or hold too much or too little water.

So, do the following:

• Please choose the suitable soil: Fern-like soil that is a bit sandy and has things like bark or compost. This type of soil drains well but also holds some moisture.
• Check for bad things: Sometimes, soil can have bugs or diseases. Changing your soil is a good idea if you think it has a problem.
• Repot your fern: If you think the soil is the problem, you can move the fern to a new pot with fresh soil. When you do this, be gentle with the roots and ensure the new pot has holes in the bottom for water to drain.

– Maintain Humidity Levels To Be Above 40 Percent

To keep ferns healthy and prevent brown leaves, it’s essential to maintain the right amount of humidity. When the humidity drops below 40 percent, it can cause brown tips. Over time, this brown can spread to more of the leaf if nothing is done.

Do the following:

• Use a Humidifier: One of the simplest ways to increase humidity for indoor ferns is by using a humidifier, which releases water vapor into the air. Place it near your ferns but not too close to avoid over-wetting the leaves.
• Group Plants Together: Another trick is to place multiple plants near each other. As they all release water vapor, they create a mini-humid zone. Ferns will benefit from this communal setup.
• Water Trays: Fill a tray with water and place it near your ferns. As the water evaporates, it adds moisture to the air. If you have a pot with a saucer, the evaporating water from the saucer can also provide humidity.
• Misting: Using a sprayer or spray bottle to mist your ferns with water can increase the humidity around them. But be careful not to overdo it. Too much water can lead to other problems like fungus.
• Regularly Check Humidity Levels: A hygrometer, a device that measures humidity, is a good idea. This will help you know if you’re providing enough moisture in the air for your ferns.

– Treat Diseases

When your fern turns brown due to diseases, we suggest you do these things:

• Treat with Anti-Fungal Sprays: If your fern has a fungal disease, you can use a spray that kills the fungus. Make sure the spray is safe for ferns (read online reviews or contact the manufacturer for this).
• Improve Air Circulation: Ferns sometimes get sick because there’s insufficient air around them. If the air is still wet, it can make diseases spread faster. A small fan or open window can help get the air moving.
• Keep Things Clean: Keeping the area around your ferns clean is essential. Old leaves or water can be places where diseases grow. By cleaning up and making sure everything is tidy, you can stop infections from starting.
• Isolate Sick Plants: If one of your ferns is sick, move it away from your other plants. This will stop the disease from spreading.

– Use Rooting Hormones ror Root Stress

Stress in roots can manifest in several ways. This includes slower growth, wilting, or even browning of the upper plant parts. This is a sign that the plant isn’t receiving enough nutrients or water from the roots.

So, how do you apply rooting hormones? They come in various forms, such as powders, gels, and liquids. Depending on the type, you’ll dip the roots into the substance or apply it directly to the plant’s base. Always follow the product’s instructions when doing so.

Note: Safety first! While rooting hormones benefit plants, they can be harmful if ingested. Ensure they’re stored out of reach from children and pets, and wash your hands thoroughly after use.

– Clean Leaves Regularly

Dust on the leaves can block essential light, hindering the plant’s ability to create food through photosynthesis. Furthermore, grime can clog the tiny pores on the leaves, restricting their breathing ability.

Gently wipe the fern’s leaves using a soft, damp cloth. This not only cleans the leaves but also provides some humidity. For larger ferns, consider giving them a gentle shower. Ensure the water isn’t too cold or too hot.

Making leaf cleaning a regular part of your plant care routine is a good idea. Depending on where your fern is placed, you might need to clean its leaves every few weeks or once a month.

Despite best care efforts, fern leaves might turn brown over time. The question that often arises is, should I cut off brown fern leaves? The answer is yes. It’s best to prune away the brown, damaged fronds as they can drain energy from the plant. This will allow the fern to focus on producing fresh, green fronds.

Conclusion

Ferns turning brown can result from numerous factors, such as underwatering, poor drainage, disease attacks, improper pruning, and many others. To ensure your ferns remain green and thriving, always consider the following:

• Adjust watering routines based on your fern’s specific needs.
• Monitor and maintain proper humidity levels, especially for indoor ferns.
• Address diseases swiftly and practice good plant hygiene.
• Use rooting hormones if your ferns are dealing with any root stress.

By prioritizing these steps, your ferns will flourish, showcasing their natural beauty for years.