What Is The Best Fungicide For Powdery Mildew? 7 Best Choices

Are you a garden owner who wants to know what is the best fungicide for powdery mildew? You are lucky because you have come across the right article as we will give you a range of options to choose from.

Powdery mildew usually infects plants. It occurs when the mildew spores travel in damp conditions and land on surfaces.

what is the best fungicide for powdery mildew

This fungus will create damage to your plants by feeding on their roots. There is no better solution to powdery mildew than knowing its causes and preventing it as much as possible.


What Causes Powdery Mildew?

Powdery mildew needs humidity to thrive. It feeds on plants causing them to slowly decay and eventually die.

One of the most known causes of powdery mildew is the lack of air circulation in a garden. Damp and warm environments are conducive to fungal growth, and the lack of air movement is a significant factor in it.

It is also important to keep your plants that are prone to mildew in areas where there is direct sunlight. Powdery mildew also tends to grow in dark places, so as much as possible, keep your plants in well-lighted areas.

Just like plants, the soil is also prone to fungi. Here’s an article on how to get rid of powdery mildew in soil that you can check out.


7 Best Fungicides For Powdery Mildew

When choosing a fungicide to treat powdery mildew on plants, there are a few things that you have to consider. Of course, do not forget to pay special attention to protecting yourself from harmful chemicals.

The symptoms of powdery and downy mildew may be hard to distinguish. It is why it is essential to make sure that you are diagnosing your plant right before proceeding with buying a fungicide.

A user-friendly fungicide must have clear instructions on its label. Please do not buy a product that does not tell you exactly how to use it.

Given this consideration, we have put up a list of the best fungicides for you to choose from.


1. Spectracide 100507462 Immunox Multipurpose Fungicide

It is the best-rated fungicide that you can find on amazon. It is multipurpose, so you can apply it not just for powdery mildew but also for black spot and dollar rot.

One of its best features is it does not wash off even with sprinklers and rain, so you don’t need to worry about wasting the solution when you water your plants.


2. BioAdvanced 701270A Effective Fungicide

It has an active ingredient called propiconazole that is very powerful against powdery mildew. This effective ingredient also gets absorbed by plants later, which triggers immunity against the pathogen.

It is also a multipurpose fungicide. It can treat brown patches, rot, lawn rust and control mites alongside killing powdery mildew. As long as you use the right amount, this product will not result in any side effects.


3. Bonide 811 Copper 4E Fungicide 16oz

This one is Amazon’s choice for a fungicide that treats powdery mildew. It is a copper-based fungicide that is specifically formulated to control powdery and downy mildew.

This fungicide is best used for fruits, herbs, roses, and ornamental plants in your garden or field. If applied according to the instructions on its label, it will eradicate pathogens quickly without any side effects when used around pets and humans.


4. Growers Trust Powdery Mildew Killer Non-Toxic, Biodegradable

This non-toxic and biodegradable fungicide is specially formulated to fight mildew spores immediately. You can use it both on lawns and crops and vegetables in your garden.

This fungicide is both curative and preventive. It can be used before and after powdery mildew occurs.


5. Serenade Garden AGRSER32 Disease Control

A multipurpose fungicide effectively controls various diseases like rust, black spot, blight, and powdery mildew. It is best used in medicinal herbs, ornamental plants, flowers, and fruits.

You don’t have to worry about toxic components as this fungicide is nontoxic. You can use any type of sprayer when using it.


6. Fertilome F-Stop Lawn and Garden Fungicide

You can use this fungicide both in lawn and garden. It effectively gets rid of powdery mildew that appears on vegetables, fruits, shrubs, and ornamental plants.

It is also effective when used on plants prior to infection as it helps prevent powdery mildew and other diseases. It has a very advanced active ingredient that eradicates diseases in just a matter of days.


7. Phyton 35 8oz. Bactericide Fungicide

It is best used for cases on herbs, shrubs, and ornamental plants that involve both pythium and powdery mildew at the same time. It is a systemic fungicide that disrupts the internal system of fungi.

It requires no specific recommendation regarding the application as it is nontoxic. It won’t clog spray nozzles and won’t leave any visible residue.

If you refuse to use chemical solutions, you can get some ideas on how to get rid of powdery mildew organically from this helpful guide.



Now that you have gone through the options, you can properly decide what is the best fungicide for powdery mildew. You can now keep your plants green, healthy, and mildew-free!

Leave a Comment