Best Fungicide for Lawns



Lawn fungus can cause a lot of devastation to your property. Fungal growths are hard to detect, because they are so tiny and often grow near the root of your lawn. When you finally do notice fungal growth, large portions of your lawn are likely already affected. Lawn fungal diseases can result in white, yellow, or brown patches on your lawn or in rings that grow in diameter. They can also cause all sorts of spots on your glass blades and stems and can also cause a gray, pink, or black powdery coating on your grass blades.

The best way to get rid of lawn fungus is by using quality fungicide for lawns.

The Five Best Fungicides for Lawns

There are quite a few different types of fungicides available on the market, and many of them are designed for other plants but can be just as effective for killing lawn fungus. In this guide, we are going to compare some of the best lawn fungal killers to get if you are struggling with a stubborn outbreak that is killing your lawn.

1. BioAdvance Fungus Control for Lawns

This fungal control treatment by BioAdvance is one of the best treatments to get if you want to kill fungus on your lawn specifically.

One bottle is enough to cover up to 5,000 square feet and is ideal for killing fungi on the spot and preventing fungi. This spray is absorbed by the grass and stays in your plants to offer adequate fungi protection for up to thirty days. Once absorbed, the treatment cannot be washed away by the rain.

You can use this treatment in a spray tank, or you can connect a hose directly to the spray cap and treat your lawn directly from the bottle.


Weight: 2.33 pounds

  • Size: 5 x 3 x 12 inches
  • Quantity: Thirty-two ounces
  • Surface Coverage: 5,000 square feet
  • Durability: Protects for one month
  • Where To Use: On lawn only
  • Function: Kill existing fungi, protects against future infections
  • Weather Resistance: Absorbed into plants, so rain cannot wash it away
  • Container Type: Spray nozzle attaches to hose
  • Included: One bottle


  • Specifically formulated to kill fungi on lawns
  • One bottle covers up to 5,000 square feet
  • Protects your lawn for up to one month
  • Kill existing fungi
  • Protects from future diseases and fungi
  • Product is absorbed into plants, so rain or watering won’t wash it away
  • The spray nozzle can attach directly to a hose for easy application
  • The product is easy to use


  • Children and pets should stay away until lawn has fully dried
  • Even distribution of product can be challenging when using the bottle and hose connection
  • Not suitable for other plants


2. Spectracide Immunox Multi-Purpose Fungicide for Gardens

Spectracide’s Immunox Fungicide is another good investment if you want to treat your lawn as well as other plants in your garden. This is also a good fungal treatment for humid areas that are prone to plant diseases.

The fungicide can produce up to sixteen gallons of spray treatment. While you are applying the treatment, you should keep children and pets away from the treated area until the surface has fully dried. Once dried, your fungi won’t just be treated, your plants will also be protected from future diseases for up to two weeks.

This concentrate can be mixed with water and applied to various plant types including fruits and vegetables that you should wash before consumption.


  • Weight: 1.2 pounds
  • Size: 2.2 x 3.7 x 8.3 inches
  • Qty: 473 millilitres
  • Surface Coverage: 1:128 ratio, one bottle makes sixteen gallons of spray
  • Durability: Two week protection
  • Where To Use: Lawn, fruits, nuts, vegetables, and trees
  • Function: Kills fungi and protects against growth for two weeks
  • Weather Resistance: Cannot be washed off once dried
  • Container Type: Bottle
  • Included: One bottle


  • Use this product to kill fungi on various plant types
  • The treatment cannot be washed off once it dries on the surface
  • Offers up to two weeks of protection
  • The bottle makes a total of sixteen gallons of spray
  • Very easy to use
  • Kills various types of fungi
  • Protects your fruits and vegetables from fungi


  • No spray nozzle on the bottle
  • You will need a spray can


3. Southern Ag Liquid Copper Fungicide

If you want to make a lot of fungicide spray, then this is a good product to consider. The bottle makes up to forty-eight gallons of spray that can be used on your lawn or other types of plants to treat algae and fungus. You can also use this treatment on roses, fruit, or vegetable plants.

This fungal treatment kills fungus on contact. You can also use it to kill moss and algae on humid surfaces such as around taps, gutters, or on walkways.

The fungicide is very easy to use, but you do need to dilute it with water and pour it into a spray tank. Then you should spray the surface to treat your plants. This product is toxic to pets and children while it is still wet.


  • Weight: 1.31 pounds
  • Size: 2.05 x 4.1 x 6 inches
  • Quantity: 474 millilitres
  • Surface Coverage: Makes up to forty-eight gallons of spray
  • Durability: Kills on contact
  • Where To Use: Lawns, vegetables, fruits, citrus, and algae
  • Function: Controls diseases and fungi
  • Container Type: Bottle
  • Included: One bottle


  • One bottle makes up to forty-eight gallons of spray
  • Kills fungi on contact
  • Can be used on lawns and other plants
  • Use this product to protect fruits and vegetables
  • The product is easy to use
  • Also controls moss and algae
  • Formula works well with hose end sprayers
  • Kill various diseases such as rust, blights, and spots


  • No hose end sprayer included
  • It is unclear how long this product will protect plants
  • You will need a spray can to apply the product


4. DR Earth Disease Fungicide

If you are afraid to use a fungal treatment that contains lots of chemicals, then you should consider this spray by Dr. Earth. This disease fungicide is made from natural organic products, and it is people and pet safe. You can use it for treating fungal growth in your lawn, on other plants, and even on edible crops. With this product, you can safely spray and treat fruits and vegetables and still harvest completely organic produce.

One bottle of this spray is enough to treat up to 5,000 square feet, and the product is ideal for killing a variety of diseases and fungal growths.

To use this product, you can either create a mixture with water in a spray tank, or you can connect the bottle directly to a hose and treat your garden while you wet it.


  • Weight: 16 ounces
  • Size: 9.5 x 8 x 11 ounces
  • Quantity: Thirty-two ounces
  • Surface Coverage: Up to 5,000 square feet
  • Where To Use: Lawns, trees, shrubs, roses, fruits, and vegetables
  • Function: Kill and control fungi and diseases
  • Container Type: Spray nozzle connects to hose
  • Included: One bottle with spray nozzle


  • The bottle is enough to treat up to 5,000 square feet
  • You can use this product to treat various plant types
  • Protect fruits and veggies from fungal growth
  • The bottle has a hose nozzle included
  • It is people and pet safe
  • Natural and organic product is safe on edible crops
  • Easy to use


  • Some might not like to use the hose nozzle
  • You need a tank sprayer for proper application
  • The duration of protection is unclear


5. Dow AgroSciences Eagle 20EW Fungicide

This is another good fungal treatment for humid areas where fungi keeps coming back. The 20EW will protect your plants and lawn for ten to fourteen days before re-application will be needed, and it will kill any growth or diseases that break out during this time.

This product is designed to kill over fifteen fungal diseases such as dollar spot, brown patch, anthracnose, spring dead spot, necrotic ring spot, red thread, leaf spot, powdery mildew, rusts, zoysia large patch, septoria leaf spot, zonate leaf spot, and various other types.

To apply the treatment, you need to dilute it as instructed with water and spray it onto surfaces using a spray tank. Measuring out the required amount is very easy, because the bottle is designed with a measuring compartment that makes it very easy to pour the exact amount of concentrate you need.


  • Weight: 1.26 pounds
  • Size: 4.91 x 8.67 x 2.05 inches
  • Quantity: One pint
  • Durability: Ten to fourteen days of protection
  • Where To Use:  Lawn, landscapes, ornaments, greenhouses, nurseries, apples, stone fruits, and grapes
  • Function: Prevent and control fifteen fungal diseases
  • Container Type: Bottle with measure compartment
  • Included: One bottle of fungicide


  • This product can kill fifteen fungal diseases
  • The bottle includes a measure compartment for easy mixing
  • Can be used on lawns and various other plants
  • Can be used to protect your fruits and vegetables
  • Protects plants up to fourteen days
  • It is easy to use


  • The surface coverage per bottle is unclear
  • No spray nozzle for a hose included
  • You will need to get a spray tank for proper application


Buying Guide

All of these fungal treatments seem like a good buy, which can make it hard for you to choose the right one. If you’re having a tough time deciding, this quick guide should help you to choose.

The Best for Lawns

If you are looking for a fungi treatment that is designed specifically for lawns, then the BioAdvance Fungus Control is the best one for you. This product cannot be used on other plants, but it is ideal for protecting your lawn from fungi for up to thirty days.

The Best for a Variety of Plants

All of the fungal treatments on this list, except the BioAdvance Fungus Control, can be used on a variety of plants like fruit and vegetable plants. If you want to treat a variety of plants in your garden, then you can invest in any of the other treatments on our list.

The Best for Edible Foods

Those who are worried about consuming toxic chemicals should consider the Dr. Earth Disease Fungicide. This fungicide is made from natural, organic ingredients that won’t harm your body when consumed.

The Best for Resilient Fungi 

If you have tough fungi or live in a humid area where fungi is a common issue, then you should consider the BioAdvance Fungus treatment. This one is absorbed by your lawn and will offer the needed protection for up to thirty days.

If you are also treating other plants like fruit and vegetable plants, then you can also consider the Spectracide Immunox Fungicide spray. This one will stay on your plants to protect from fungi for up to two weeks.

Fungi Bottles You Can Connect to the Hose

If you don’t have a spray can in which to make a mixture of fungal treatment, then you should consider a bottle with a spray cap that can be connected to a hose. The BioAdvanced Fungicide and Dr. Earth Fungicide both have these types of caps that connect directly to your hose for easy application.

Final Thoughts

We do hope that this guide helped you find a good lawn fungicide to restore your lawn to health before too much damage sets in. If you are also on the market for other quality gardening equipment and products like a worm composter, an electric kitchen composter, or soil test kits, then you should hop over to some of our other buying guides. The other products we review on this site might be just what you’re looking for to achieve a successful lawn and garden.

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