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How to Get Rid of Fungus on Fern Plant

Updated: March 31, 2022

Ferns are a popular houseplant loved for their lush, green foliage and easy maintenance. However, like any other plant, ferns can sometimes develop fungus, which can harm the plant’s health and appearance. If you notice your fern has fungus, it’s important to take action quickly to prevent the problem from spreading. In this article, we’ll cover the steps you need to take to get rid of fungus on your fern plant.

Identify the Type of Fungus

The first step in treating fungus on your fern is to identify the type of fungus. There are several types of fungus that can affect fern plants, including powdery mildew, black spot, and root rot. Each type of fungus requires a different treatment method.

Powdery mildew appears as a white or gray powdery substance on the leaves of the fern. Black spot appears as circular black spots on the leaves. Root rot affects the roots of the plant and causes them to turn brown and mushy.

Remove Affected Leaves

Once you’ve identified the type of fungus on your fern, it’s time to remove any affected leaves. Use a pair of sharp scissors or pruning shears to carefully cut off any leaves that have visible signs of fungus. Be sure to dispose of these leaves in a sealed plastic bag to prevent the spores from spreading.

Improve Air Circulation

Fungus thrives in moist environments, so improving air circulation around your fern can help prevent future outbreaks. Place a fan near your fern or move it to a location with better air circulation. Also, make sure not to overcrowd your fern with other plants.

Adjust Watering Habits

Overwatering is a common cause of fungus on ferns. To prevent overwatering, check the soil moisture level before watering your fern. Only water when the top inch of soil feels dry to the touch. Also, make sure your fern is not sitting in standing water, as this can contribute to root rot.

Apply a Fungicide

If your fern’s fungus problem persists after removing affected leaves and adjusting watering habits, it may be time to apply a fungicide. Look for a fungicide specifically labeled for use on ferns and follow the manufacturer’s instructions carefully.


Fungus can be a frustrating problem for fern plant owners. However, with the right treatment and prevention methods, you can get rid of fungus on your fern and prevent future outbreaks. Remember to identify the type of fungus, remove affected leaves, improve air circulation, adjust watering habits, and apply a fungicide if necessary.


Can I use a homemade fungicide on my fern?

While there are many DIY fungicide recipes available online, it’s best to use a commercial fungicide specifically labeled for use on ferns. Homemade remedies may not be as effective and could potentially harm your plant.

How often should I water my fern?

The frequency of watering your fern depends on several factors, including the size of the plant, the type of potting soil used, and the humidity levels in your home. As a general rule of thumb, only water when the top inch of soil feels dry to the touch.

Can I prevent fungus from developing on my fern?

Yes! To prevent fungus from developing on your fern, make sure it has adequate air circulation, avoid overwatering, and keep the plant away from other plants that may have fungal diseases.