3.5 out of 5 Customer Rating
Scotts® DiseaseEx™ Lawn Fungicide is rated 3.9 out of 5 by 293.
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Scotts® DiseaseEx™ Lawn Fungicide

3.5 out of 5 Customer Rating
Scotts® DiseaseEx™ Lawn Fungicide is rated 3.9 out of 5 by 293.
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Scotts® DiseaseEx™ Lawn Fungicide

$25.99

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37610C

Overview

  • Use Scotts® DiseaseEx™ Lawn Fungicide on home lawns to prevent disease before it appears and control disease at the first sign of symptoms
  • Controls 26 listed lawn diseases, including brown patch, pythium blight, stem and stripe rust, gray and pink snow mold, necrotic ring spot, red thread, powdery mildew, and anthracnose
  • This fungicide for lawns starts working within 24 hours of application, and continues to control diseases up to 4 weeks; safe for all grass types when used as directed
  • For best results, begin applications of this lawn care treatment prior to disease symptoms, or when conditions are favorable for disease
  • One 10 lb. bag of Scotts® DiseaseEx™ Lawn Fungicide 10 lb. bag treats up to 5,000 sq. ft.

Active Ingredients

  • 0.31% Azoxystrobin

Cautions

  • When used as directed, this product is safe to the lawn and controls the disease listed. Consult with your local Cooperative Extension Service office or your state's land grant university for assistance with lawn disease identification and specific fungicide timing in your area to control lawn diseases.

Product Label

  • This is not the product label. Always read and follow the product label before use.
  • Download Label
  • Safety Data Sheets can be found at scottsmsds.com

DESCRIPTION

Don't let brown spots or mildew block your path to a beautiful, green yard. Scotts® DiseaseEx™ Lawn Fungicide prevents disease before it appears and controls disease at the first sign of symptoms. It controls 26 listed lawn diseases, including brown patch, stem & stripe rust, red thread, powdery mildew, necrotic ring spot, and pink patch. Scotts® DiseaseEx™ Lawn Fungicide starts to work within 24 hours of application, and continues to control diseases up to 4 weeks. We recommend using a Scotts® spreader to apply this product. For Scotts® broadcast/rotary spreaders, use a setting of 2 ¼ for the preventative rate or 3 ¾ for the curative rate. For Scotts® drop spreaders, use a setting of 4 for the preventative rate or 5 ½ for the curative rate. For Scotts® Wizz, use a setting of 3 ¼ for the preventative rate or 4 for the curative rate. For best results, begin applications prior to disease symptoms, or when conditions are favorable for disease. It can be applied after seeding or at seed germination. The product may be reapplied at 14-28 day intervals. One 10 lb. bag of Scotts® DiseaseEx™ Lawn Fungicide treats up to 5,000 sq. ft.

How to Use

  • Use on home lawns to prevent disease (Preventative Rate Setting) before it appears and/or to control disease (Curative Rate Setting) at the first sign of disease.

Where Not to Use

  • Do not apply more than 37 lbs. of Scotts® DiseaseExTM Lawn Fungicide per 1,000 sq. ft. in a single year.

Where to Use

  • Use on home lawns to prevent or control common diseases (see label for complete list of lawn diseases controlled).

When to Apply

  • For best results, begin applications prior to disease symptoms, when conditions are favorable to disease, typically in spring.

How Often to Apply

  • Product may be re-applied at 14-28 day intervals.
  • Use the shorter re-treatment intervals and higher application rates when prolonged favorable disease conditions exist.
  • Do not apply more than 37 lbs. of Scotts® DiseaseExTM Lawn Fungicide per 1,000 sq. ft. in a single year

Frequently Asked Questions

DISEASES CONTROLLED

Brown Patch

Stem & Stripe Rust

Red Thread

Powdery Mildew

Anthracnose

Pythium

Southern & Typhula Blight

Leafspot

Pink Patch

Necrotic Ring Spot

Summer Patch

Fusarium Patch

Gray Leafspot

Leaf Rust

Melting Out

Yellow Patch

People and pets may enter the treated area after application.

In order to protect estuarine/marine fish and aquatic invertebrates, do not apply directly to water, and avoid runoff. Do not contaminate water when disposing of equipment wash water or rinsing.

Rated 5 out of 5 by from Excellent Product My backyard had terrible fungus spreading throughout. Within 10 days of applying DiseaseEx, my yard was fully cleared up.
Date published: 2025-07-18
Rated 5 out of 5 by from Disease-Ex worked for my lawn I'm located in Northern NJ. In 2024 brown spot devastated my front yard and I had to repair and reseed over 50% of the yard. Again, in early June 2025, I noticed early stages of brown spot and applied Disease-Ex at recommended curative setting. After 1 week, didn't notice much improvement, but fungus did not expand. Second week I noticed some improvement and same in 3rd week. It's now the 4th week and it's all gone and green grass once again! I plan to apply another application in a few weeks as preventative. I got lucky and caught brown spot early on. I also stopped using my E-Go electric mulching mower as not to spread fungus to other parts of the yard. Last 4 weeks I have been using my Honda mower and bagging. All good now and very pleased with my actions and Disease-Ex.
Date published: 2025-07-16
Rated 5 out of 5 by from Stopped progression of fungus Stopped progression of disease on my tall fescue and Zoysia.
Date published: 2025-06-15
Rated 5 out of 5 by from DiseaseEX this was a very good product; easy to read & follow instructions and saw results in 24 hrs. Great Stuff. Thank you Scotts Team..
Date published: 2025-06-10
Rated 5 out of 5 by from Lawn It appears to work as advertised. Got ride of the white mildew on my lawn.
Date published: 2025-06-02
Rated 5 out of 5 by from Removal of Lawn Rust Gets rid of rust in my lawn within a week. Great product!
Date published: 2024-10-27
Rated 5 out of 5 by from Best insurance for preventing thousands in re sod Disease will kill your St Auugustine lawn. Then the bugs come to finish it off. I use Disease X so this doesn't happen. Stops existing scourage and prevents damage to replacement turf. It's what you need 'cause the spray companies do fertilizer and weed killer but NO disease application.
Date published: 2024-10-18
Rated 5 out of 5 by from Works as Advertised. Bought this last Thursday and applied. Had a light rain overnight. Have not had any of the fungus show up on shoes or rider lawnmower wheels since.
Date published: 2024-09-25
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