What Causes White Mold On Plants? Troubleshooting Guide

Helen Skeates
Helen Skeates
9 min read

When asked, “What causes white mold to grow on plants?” the response is: is a maze of complications. The simplest reason is that mold thrives in specific conditions.

Read on to learn more about the circumstances that lead to the development of white mold on plants!

What Is White Mold?

When it comes to white mold, there is no distinct strain. To be considered a white mold, you must have one of the three species listed above: Aspergillus, Cladosporium, or Penicillium.

When mold is still in the early stages of development, it takes on a white hue. As they continue to produce mold spores, they will eventually turn a different color.

A colony is likely to form if they create more mold spores. You may find this information useful in eliminating mold spores and preventing further growth of the fungus.

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Why Does White Mold Grow On Plants?

In most cases, white mold development is innocuous. A saprophytic fungus that feeds on degrading organic waste is to blame for the development.

Because of the white mold growth, you should be concerned about the health of your plant. White mold growth can be caused by a variety of factors, including the following:

1. Poor lighting

Mold thrives in damp, gloomy places, so if your plants aren’t getting enough sunshine, mold spores are more likely to settle on them. Even without water and food, though, your plants are able to thrive.

Furthermore, it is dangerous for plants to be deprived of adequate light. Mold thrives in low-light circumstances, and your plant will suffer as a result.

2. Moisture

The air around indoor plants isn’t regulated in any way. That means that mold spores are more likely to settle on the damp soil and grow from there.

It’s easy for mold to grow on indoor plants when there’s a lot of water and little airflow.

3. Lack of ventilation

Because of poor air circulation in your homes, the soil on the surface of your property remains moist. Outdoor plants, on the other hand, benefit from a natural breeze that dries the soil’s surface.

Are white molds on plants dangerous?

White mold is a common occurrence, but it poses a disease risk to your plants. It weakens and yellows the foliage of the plants it comes into contact with.

In no time at all, the mold-infected plant will succumb to its demise. Mold can also spread to nearby plants, making it a concern if you have any of your own.

When left unchecked, it has the potential to damage the internal structures of your house as well. In addition, mold might cause allergic reactions among your most vulnerable family members.

4 Ways to Get Rid of White Mold on Plants

The easiest method to avoid mold and other problems is to grow disease-resistant plant kinds. Home methods for removing white mold from plants are available if that isn’t an option.

  1. Apply neem oil. Neem oil, a naturally occurring insecticide, can be used to combat white mold and other unpleasant bugs in your home. Spray a half-gallon of water with two tablespoons of organic neem oil and liberally apply to the afflicted plant every several days until the mold has disappeared.
  2. Mouthwash is a good option. White mold can be treated with an ethanol-based mouthwash. Mix one tablespoon of mouthwash with three tablespoons of water and apply to the affected region. Avoid saturating the market. White mold can be effectively treated with mouthwash, but excessive application of the product might impair new plant growth and burn leaves.
  3. Vinegar is a good choice. You may use vinegar to get rid of mold and white patches on your plants. Spray your affected leaves and stems with a mixture of two teaspoons of apple cider vinegar and a quart of water. Repeat every several days until the mold is completely gone.
  4. Preventive medicine is a good idea. Preventing mold from growing in the first place is one of the most effective strategies to combat it. Use an organic fungicide or a mixture of baking soda and liquid detergent in a gallon of water to treat your plant leaves and stems. Spray the plant liberally with the mixture after mixing it in a spray bottle.

Plants That Are Most Susceptible to White Mold

Powdery mildew can damage most plants, although specific species of trees, shrubs, and flowers are especially vulnerable to the white fungal infestations. Erysiphales fungi grow in damp, warm temperatures. As a result, white powder mold is a common problem for plants in warm, humid areas.

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Plants like African violets, kalanchoes, indoor ivies, jade plants and poinsettia are particularly vulnerable to mold in indoor environments.

Plants including hydrangeas and lilacs, as well as apple and oak trees as well as zinnias, roses, and strawberries, are susceptible to white fungal infections.

Why Does White Mold Appear on Plants?

When naturally existing fungal spores germinate and expand, white fuzzy mold appears on plants. When conditions are warm and moist, white fungal growth (also known as mycelium) occurs, especially on plants that are poorly lit. Houseplants that are overwatered and kept in the shade might develop white mold.

Is White Fuzzy Mold Dangerous for Plants?

If you observe a powdery layer on the leaves of plants, you don’t need to be concerned. It’s safe to have white fungus on plants, according to the Royal Horticultural Society. This white leaf fluff is unavoidable on certain plants. It’s understandable that you’d want to know how to swiftly remove white mold from soil or leaves.

How to Get Rid of Mold on Plants

However, even though white fungal diseases on plants are innocuous, getting rid of the white fluff is a rather simple procedure. Most of the materials for a natural fungal spray can be found in your pantry.

When it comes to getting rid of the white, fuzzy deposits on leaves, baking soda is a great option. The leaves can be protected from mold by diluting ordinary milk with water and sprinkling it on them. White mold spots on plants can be eliminated by simply adjusting your watering methods.

How Do I Get Rid of the Mold on My Plant Soil?

Cinnamon is a natural anti-fungal that some gardeners swear by. Remove the mold by wiping it away and then sprinkling some cinnamon on the affected area.

Homemade baking soda and water mixed with water can be used as an alternative to cinnamon in the event that it doesn’t work, suggests Gaumond. To ensure that a solution isn’t excessively strong, try it out on a small area of your plant first. To prevent future mold growth, it’s critical to address the conditions that permitted it to occur in the first place. Once you’ve figured out what’s going on, you can make adjustments to your plant’s care.

How Can I Prevent New Mold from Growing?

To maintain your soil’s natural equilibrium, make sure you’re getting the correct amount of sun, air, soil, and water. Start by only watering when absolutely required. Despite the fact that many houseplants include maintenance recommendations, Levi advises against following them. According to him, most plant tags that arrive with a plant give care instructions based on where the plant was cultivated, not where you live.

Instead of watering according to a set timetable, check the soil’s moisture level by sticking a finger in there a few inches. Hydrospikes are another solution for plant owners who forget to water.

Mold on Plant Soil: How to Get Rid of Mold on Houseplant Soil

Pots with no holes for drainage should be avoided. A ornamental pot that doesn’t have holes can be repurposed in many ways. Underneath the potting soil, you can add landscape rocks to create a catchment area for rainwater. Another option is to try and drill holes in the pot, although this may result in shattered pieces of clay or ceramics. Repotting your plant may be necessary if mold grows in its soil due to the fact that none of these solutions are guaranteed to work.

Finally, make sure your houseplant is in a location that receives enough of sunlight and fresh air. As a result, artificial plants may be necessary in confined areas or neglected nooks. An alternative to letting in fresh air through a window is to use a fan.


It is our hope that you have learned what causes white mold on plants and how to prevent it. Even though it’s a long and tiresome procedure, the end result is worth it.

We’ve got you covered even if you find yourself dealing with white mold development! To eradicate white mold from plants, simply read the section and pick one of three methods described there.

Helen Skeates

Helen Skeates

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