10 Best Fungus Treatment For Lawns 2025 in the United States

Scotts DiseaseEx Lawn Fungicide is designed to protect and treat lawns affected by a wide range of common fungal diseases, including brown patch, powdery mildew, and necrotic ring spot, covering 26 types in total. It works quickly, starting to control problems within 24 hours and providing protection for up to four weeks. The product is applied using a Scotts spreader, which helps ensure even coverage across an area of up to 5,000 square feet per 10-pound bag, making it suitable for medium-sized lawns.

This fungicide acts both preventively and curatively, meaning you can use it before symptoms appear or to treat visible disease. The formula is systemic, so it works from inside the grass to address infections. One positive point is that people and pets can safely return to the treated lawn shortly after application, which is convenient for families. While it provides up to four weeks of protection, frequent treatments may be necessary in areas with persistent fungal issues.

Scotts DiseaseEx serves as a reliable choice for homeowners seeking a straightforward, fast-acting solution to common lawn fungus problems with easy application and good coverage.

Scotts DiseaseEx Lawn Fungicide is a versatile product designed to prevent and control a wide range of lawn diseases, making it suitable for homeowners looking to maintain healthy lawns. It effectively targets 26 different types of fungal diseases, including common issues like brown patch and powdery mildew, which is a significant strength.

The active ingredient, Azoxystrobin, is known for its efficacy in controlling fungal growth, and the product starts working within 24 hours of application, providing quick results. It can treat up to 5,000 sq. ft. with a single 10 lb. bag, making it a good choice for medium to large lawns. The recommended frequency of application is every 4 weeks, which is manageable for most users and ensures ongoing protection.

Scotts DiseaseEx Lawn Fungicide is a reliable option for treating a broad spectrum of lawn diseases efficiently, but users should be mindful of how and when to apply it for optimal performance. The product's environmental impact isn't clearly discussed, which could be a concern for eco-conscious users. Additionally, it requires careful timing and application to achieve the best results, as it's most effective when applied before disease symptoms appear.

Spectracide Immunox Fungus Plus Insect Control is designed to tackle major lawn diseases and funguses while also killing certain lawn insects on contact. Its dual-action formula is a strong point, making it useful for homeowners who want to protect their grass from multiple threats without using separate products. The product is easy to apply using the QuickFlip hose-end sprayer, which attaches directly to your garden hose and sprays with a simple switch activation, saving time and effort. Once applied, it becomes rainproof within hours, so you don't have to worry about the treatment washing away if it rains shortly after application.

For best results, the manufacturer recommends starting treatment early in the spring when grass begins to green and repeating every two weeks to prevent disease buildup. The coverage area is typical for a 32 fl oz bottle, suitable for small to medium-sized lawns. This product fits well for homeowners looking for an easy-to-use, combined fungus and insect treatment, especially those dealing with common lawn problems and seeking a spray that holds up well in wet weather.

Users with very large lawns or those wanting to learn more about the environmental impact may want to conduct additional research before committing to this product.