Powdery mildew is a fungal disease that affects a wide range of plants, including vegetables, fruits, ornamentals, and trees. It is characterized by a white or grayish powder that appears on the surface of leaves, stems, and flowers. 

Powdery mildew can severely harm plants, causing stunted growth, defoliation, and decreased production if left untreated. However, powdery mildew on plants can be managed in a number of efficient ways.

In this article, we will discuss some of the best methods for controlling powdery mildew on plants. Also, how can you hire lawn disease experts to control powdery mildew on plants.

7 Best Methods to Control Powdery Mildew on Plants

The methods to control powdery mildew on plants are given below:

1. Remove infected leaves

Powdery mildew on plants can be controlled by removing affected plant portions. When you notice white, powdery spots on the leaves or stems of your plant, it’s important to act quickly.

Use pruning shears or scissors to remove the infected parts and dispose of them in a sealed plastic bag. This will prevent the disease from spreading to other parts of the plant or to nearby plants. 


To prevent the disease from spreading, it’s necessary to sanitize your pruning equipment with rubbing alcohol or bleach after each use. That’s how powdery mildew can be stopped and your plants can be kept healthy by removing affected plant portions.

2. Improve air circulation

Overwatering can create a humid environment that is conducive to powdery mildew growth. To prevent this, water your plants properly by giving them a deep watering once a week rather than frequent shallow watering. Water the base of the plant rather than the leaves to avoid creating a humid environment.

Use fungicides

Fungicides are a great way to control powdery mildew on plants. There are several types of fungicides available, including sulfur, neem oil, and potassium bicarbonate. Follow the instructions on the label carefully and apply the fungicide to the entire plant, including the undersides of leaves.

Use natural remedies

There are several natural remedies that can help control powdery mildew on plants. One of the most effective is a solution of 1 part milk to 9 parts water. Spray this solution on the affected plant parts every 10 days until the powdery mildew is gone. You can also use a solution of baking soda and water or a mixture of garlic and water to control powdery mildew.

Prevent future outbreaks

To prevent future outbreaks of powdery mildew, it is important to maintain good plant hygiene. This includes removing fallen leaves and debris from around your plants and sanitizing your gardening tools regularly. You should also choose plants that are resistant to powdery mildew and avoid overcrowding plants.

In conclusion, powdery mildew can be a serious problem for gardeners, but it can be controlled with proper care and attention. By following these tips, you can help prevent the spread of powdery mildew and keep your plants healthy and strong.Increasing air flow is a practical way to keep powdery mildew on plants under control. This fungal disease thrives in humid conditions, so it’s important to increase air circulation around your plants to reduce humidity levels. 


You can achieve this by spacing out your plants, pruning branches that are too dense, and removing any weeds or debris that might be crowding the area. This will improve the airflow around your plants and limit the development of powdery mildew. 

Another important element in preventing powdery mildew is maintaining the dryness of your plants, which is made possible by good air circulation.

3. Always Keep Plants Dry

Drying out plants is essential for preventing powdery mildew. 

It’s mandatory to prevent getting water on the leaves, stems, and blooms of your plants because this fungus loves damp environments. So that they have time to dry out during the day, water your plants in the morning. 


Avoid watering them at night or in the late afternoon because this can result in a wet atmosphere that is perfect for the formation of powdery mildew. Encourage air circulation and lower humidity levels; make sure the space around your plants is sufficiently aired. 

4. Use Fungicides

There are many fungicides available that are specifically formulated to combat this fungal disease. Look for a product that is labeled for the type of plant you are treating, and follow the instructions carefully. 

Fungicides can help prevent the spread of powdery mildew and protect your plants from further damage. It’s important to use them as part of an overall management strategy. 


By using a fungicide in combination with other methods, such as removing infected plant parts and improving air circulation, you can effectively control powdery mildew and keep your plants healthy.

5. Apply Neem Oil 

Applying neem oil is an effective natural method to control powdery mildew on plants. Neem oil is a botanical extract that is known for its antifungal properties. 


To use neem oil, mix it with water according to the instructions on the bottle and apply it to the leaves, stems, and flowers of the infected plant. 

Neem oil eliminates fungal spores and prevents them from growing. It also helps to strengthen the plant’s natural defenses against powdery mildew. Neem oil is safe to use on most plants and is an alternative to chemical fungicides.

6. Try UsIng Sulfur

Sulfur can be an effective method of control, but it can also harm beneficial insects and some plants if used excessively. Sulfur is a natural mineral that has antifungal properties and has been used for centuries to control fungal diseases in plants. 


To use sulfur, you can apply it as a dust or spray onto the infected plant. It’s important to follow the instructions carefully and to avoid using sulfur on plants that are sensitive to it. 

By using sulfur, you can effectively control powdery mildew and keep your plants healthy.

7. Use Baking Soda

Using baking soda is another effective natural method to control powdery mildew on plants. Baking soda is a safe alternative to chemical fungicides, but it can also harm some plants if applied too frequently or in high concentrations.

It’s best to test a small area of the plant first and to avoid using baking soda on plants that are sensitive. 


To use baking soda, mix 1 tablespoon of baking soda with 1 quart of water and a few drops of liquid soap. Apply the solution to the infected plant, making sure to cover all the leaves and stems.


Powdery mildew is a common fungal disease that can be harmful to plants if left untreated. There are many effective methods to control powdery mildew and keep your plants healthy. 

It’s important to remember that powdery mildew thrives in humid conditions, so it’s good to avoid overwatering your plants and to promote good air circulation. 

Monitor your plants regularly for signs of powdery mildew and take action promptly to prevent the disease from spreading. 

Thanks for reading!