One of the most viable fungicides that have proven to be entirely for tomato plants, and other kinds of plants, is referred to as prevention. Most times, fungicides can aid in the protection of a plant if they are made use of before any form of fungal infection starts. The moment a fungus attacks tomatoes or plant, killing it is always challenging. On the one hand, you can control its spread by spraying the parts of the plant that are still uninfected, but there is a small window of stopping a fungus once it begins fully. Proper care practices and planting are seemingly your best weapons when fighting tomato fungus.

Overview of Best-Selling Fungicides for Tomatoes

Last update on 2022-05-19

1. Bonide (BND862) – Fungal Disease Control

Last update on 2022-05-19

Mancozeb Flowable with Zinc fungicide provides for a wide variety of protectant fungicide labeled for ornamental and outdoor crops uses. It has already been produced to handle fungus that can be found on plants like; melons, azaleas cucumbers, geraniums, corn, roses, grapes, onions, tomatoes, apples, potatoes, zinnias, and many more.


  • Offers protection to fruits, vegetables, as well as ornamentals
  • Helps control diseases
  • Contains the right proportion of zinc
  • Can be easily applied
  • Broad-spectrum fungicide


  • Needs to be diluted with a small quantity of water

2. Southern Ag – Liquid Copper Fungicide

Last update on 2022-05-19

The Southern Ag – Liquid Copper Fungicide has a new formulation that works well for vegetables, fruits, and live oak. It is deemed to be one of the best fungicides for tomato plants. Hose end sprayers could be used adequately with the formulation, as it serves as good control of infections that are caused by bacteria and fungi.


  • Controls diseases caused by fungi and bacteria
  • Labeled for control of algae and moss
  • Functions properly with hose-end sprayers


  • It is designed for usage in residential areas only

3. Bonide 811 Copper 4E Fungicide

Last update on 2022-05-19

The Copper Tomato Fungicide helps in controlling leaf curl, downy mildew, powdery mildew, rust, black spot, and other listed infections. It has been approved and is also deemed as suitable for your basic organic gardening desires. This is an organic treatment for tomato plants, and it can be used, even on the harvesting day. This natural Fungicide is designed such that that it could be safely used around pets and people without causing harm to them.


  • Can be applied easily
  • Offers protection to plants
  • Controls plants diseases
  • Ideal for organic gardening
  • It includes copper


  • It is deemed to be a bit expensive by many

4. Daconil Fungicide Concentrate

Last update on 2022-05-19

It provides safety from the most dangerous of plant pests. You need to know that mold, algae, fungus, and rust are deemed to be just as hazardous as bugs themselves could be. The Daconil Fungicide is considered as a tomato plant fungicide designed to stop these creepy killers. It offers protection against future occurrences of infections in vegetables, flowers, fruit, shrubs, as well as shade trees. Concentrates are designed to work like a tomato blight spray for easy mixing, with the squeeze made for no messes. Keep away from pets, children, and also marine life.


  • Made in the United States
  • It can stop and prevent over 80 plant diseases


  • Cannot be used on home lawns
  • Cannot be applied on wilted plants
  • It’s not pet or people-friendly

5. Bonide (BND883) – Fungal Disease Control

Last update on 2022-05-19

The most active of the ingredients listed is Chlorothalonil, as it is a fungicide for tomato plants which can function as a wide-variety fungicide. Just like copper, it is one fungicide that is probably the most used in the United States. It is designed to be made use of on different plants, such as beans, potatoes, tomatoes, daisies, geraniums, roses, onions, corn, azaleas, eucalyptus, maple trees, and many more.


  • Plant protection
  • Controls infections
  • Contains chlorothalonil
  • It is easy to use
  • Wide-spectrum fungicide


  • It is a bit difficult to wash off your hands

6. Spectracide Immunox Multi-Purpose Fungicide Spray Concentrate

Last update on 2022-05-19

This Multi-purpose formula is designed to prevent and cure all diseases on roses, flowers, and also on shrubs. Cures all significant types of diseases which include brown patch, scab, blights, rust, powdery mildew, black spot, and even others that are listed plus protection of about two weeks protection. You need to be assured that it would not fade away by rain or sprinklers the moment it is dried and it has proven to be very useful against diseases for about two weeks. You need to treat it very early in the season to achieve the best results.


  • It is designed to be rainproof
  • The multi-purpose formula is very effective
  • Offers protection of up to 2 weeks
  • Safe for garden plants and flowers


  • No drawbacks are known yet

7. Southern Ag Garden Friendly Biological Fungicide

Last update on 2022-05-19

The Ag Garden Friendly Fungicide is designed basically with organic usage in mind. It is a fungicide that aids control of plant diseases in homes and gardens; beddings, ornamentals, vegetables, and even lawns, fruit trees, shrubs, flowers, and potted ornamental plants. It provides you with the platform to control vegetables like; rusts, leaf blight, powdery mildew, leaf spots, downy mildew, damping-off, black rot, grey and white mold.


  • For organic use
  • Controls plant diseases in gardens
  • More value for money


  • When combined with water, it would not last long

Fungicides for Tomatoes Buyer’s Guide

You need to know that some factors need to be considered before procuring fungicides for tomato plants.

Active Ingredients

You have to know what type of Fungicide you intend on going for, whether it is synthetic or organic. If you want to get answers to all the questions you have, it is recommended that you know what the important ingredients of the fungicides are, and what the significant constituents are.

It is a fact that there are some major forms of organic fungicides, and they can be found in the market today, and they are Copper fungicide and Biological Fungicide.

Copper fungicide, just like the name suggests, contains copper octanoate and copper soap or sulfate as an active and significant ingredient. Copper is one crucial trace element that is essential for human health. It poses no harm to both pets and humans. Bonide 811 is a viable copper fungicide that you can easily get today on the market.

Biological Fungicide, on the other hand, has beneficial fungi or bacteria to help handle rust. One very important ingredient of the bio fungicide is the Bacillus subtilis. Serenade Garden AGRSER32 is an example of one of the best bio fungicides you could get out there.

The major feature of chemical fungicides is that they contain maneb and myclobutanil. This chemical is so powerful that it works like a fungicide. But all are deemed as toxic to animals, pets, and even nature. Mancozeb is not as dangerous as other agents. It would be recommended for you to go for Mancozeb. The reason for this is that it contains Fungicide in the event that you would like to go for the best Fungicide.

Certified vs Non-Certified

Another guideline you need to really put on the table is that organic Fungicide has been certified by NOP (National Organic Program) or OMRI (Organic Materials Review Institute). Both NOP and OMRI are non-profitable organic product review organizations. They help determine and certify if a product is natural or not.

Preventive vs Curative

Preventive fungicides would help you in preventing fungal diseases while Curative ones would help stop the growth of fungus after the infestation has occurred. A lot of the fungal sprays you have out there are quite good at preventing rust.

Frequently Asked Questions on Best Fungicides for Tomato Plants

How do I know if I can make use of fungicides on my tomatoes?

If the weather is hot and damp for a few days and you notice that your neighbor plants have been attacked by the fungus, then you need to make use of a fungicide on your tomato plants.

When is the best time to apply fungicides on my tomato plants?

The Fungicide will probably burn your tomato plants if you choose to apply under the hot weather. In order to minimize the chances of having leaves that are burnt, you should use a fungicide when plants are not directly under the sun. A lot of gardeners advise that you make use of the Fungicide early in the morning or late at night. However, it is still not the ideal time. A lot of times, temperatures stay low in the early evening and early morning.


With the aid of this concise and comprehensive review, I hope you have gained essential information that would be very useful while trying to procure fungicides for your tomato plants. You have to be aware if you use fungicides on your tomato plants, there’s a very slim chance that they develop fungus. It is recommended that you use fungicides as a form of prevention technique.

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