How To Remove Powdery Mildew Pest on Cannabis

Powdery mildew is a common cannabis pest that can cause significant damage to your plants. It is a powdery fungus that affects the leaves and buds of your plants and can lead to decreased yields and even death. This blog post will discuss how to identify powdery mildew on cannabis and some steps you can take to get rid of it!

What is powdery mildew, and what are its symptoms of cannabis plants?

Powdery mildew is a type of fungus that can affect cannabis plants. The symptoms of powdery mildew include white or gray powdery spots on the plant’s leaves, stems, and flowers. Powdery mildew can also cause the leaves to turn yellow or brown and eventually die.

If your plant shows the above powdery mildew symptoms, it’s crucial to act immediately. Powdery mildew can spread quickly and easily to other plants, so it’s necessary to isolate any affected plants. You should also remove any infected leaves or flowers from the plant.

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Causes of powdery mildew on cannabis plants

Several fungi cause powdery mildew, the most common being powdery mildew on cannabis (Erysiphales). These fungi thrive in warm, humid conditions and often in greenhouses or grow rooms with poor ventilation. The powdery mildew fungus produces spores that infect the plant leaves, causing them to become covered in a powdery white substance.

Powdery mildew is commonly found on the plant’s leaves but can also affect the stems, buds, and flowers. The infection starts as small, circular spots which quickly spread and cover the entire leaf surface. As the fungus grows, it produces long chains of spores easily applied by wind, rain, or even insects.

Left untreated, powdery mildew will eventually kill the plant. The leaves will become yellow and curled up, and the plant will produce fewer and smaller buds. In severe instances, the entire cannabis plant can die.

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How to get rid of powdery mildew on cannabis plants – organic and chemical methods

Powdery mildew is one of the common fungus that attacks plants. It’s characterized by white, powdery patches on leaves and stems. Powdery mildew destroys plants and makes them more likely to suffer from other diseases.

There are several ways to get rid of powdery mildew on cannabis plants. You can use chemical methods, such as fungicides, or you can try organic forms, like using milk or baking soda.

Prevention is always the best method when it comes to powdery mildew. You can prevent it by keeping your grow area clean and tidy and not overcrowding your plants. Good air circulation is also essential. If you do see powdery mildew starting to form, remove any affected leaves and destroy them.

If you’re looking for a way to get rid of powdery mildew on cannabis plants, try one of these methods:

  • Chemical methods: Fungicides are the most common method of getting rid of powdery mildew. You can apply them as a preventative measure or use them to treat powdery mildew that’s already present in your plants. Always read and follow the guidelines on the fungicide’s label cautiously.
  • Organic methods: Milk and baking soda are effective in treating powdery mildew. To use milk, mix it with water in a ratio of about one part milk to nine parts water. Spray it onto the affected areas of your plant, and be sure to reapply every few days. For baking soda, mix it with water in a ratio of one tablespoon of baking soda to one-gallon water. Spray it onto the powdery mildew, and rinse the leaves afterward, so the baking soda doesn’t damage them.

Powdery mildew can be a nuisance, but with a little effort, you can get rid of it for good. Try one of these methods; your plants will be powdery and mildew-free.


Powdery mildew on cannabis can be a real pain to deal with. However, by following the tips and tricks outlined in this blog post, you should be able to get rid of it for good!

Do you have any powdery mildew-busting tips of your own?