Maintaining a fungus-free lawn is essential for strong, vibrant turf. The right fungicide can prevent common diseases like brown patch, dollar spot, and rust, while delivering lasting protection. Below are five leading lawn fungicides that address a broad spectrum of turf fungi, offering both curative and preventive benefits. Use this guide to compare active ingredients, coverage, and application timing for the American yard.
Summary of Selected Products
| Product | Brand | Key Benefit | Coverage |
|---|---|---|---|
| Scotts DiseaseEx Lawn Fungicide | Scotts | Broad disease control (26 diseases), fast action | Up to 5,000 sq. ft. |
| Spectracide Immunox Fungus Plus Insect Control | Spectracide | Dual-action fungicide and insect control, rainproof | 32 oz hose-end |
| Atticus Gravex 20 EW | Atticus | Curative and preventive, broad spectrum | 16 oz |
| Jonathan Green Lawn Fungus Control | Jonathan Green | Controls 20+ soil-borne diseases | 5,000 sq. ft. |
| Atticus Artavia 2 SC Azoxystrobin | Atticus | systemic protection from leaves to roots | 16 oz |
Scotts DiseaseEx Lawn Fungicide
Scotts DiseaseEx is designed to prevent disease before it appears and to control active infections. It covers 26 listed lawn diseases, including brown patch and powdery mildew, with visible results starting within 24 hours and protection lasting up to four weeks. The product is suited for home lawns up to 5,000 sq. ft. and focuses on preventing symptoms while delivering rapid action to reduce spread.
Spectracide Immunox Fungus Plus Insect Control For Lawns
Immunox Fungus Plus provides dual action by controlling major lawn diseases and fungus, while also targeting listed lawn-damaging insects on contact. Its rainproof formula remains effective after light rainfall, and it’s recommended to start treatments as grass greens up in spring, with a two-week interval for best results. This hose-end concentrate offers convenient, broad-spectrum protection for lawns seeking both disease management and insect suppression.
Atticus Gravex 20 EW Fungicide
Gravex 20 EW contains 19.7% myclobutanil, aligning with the active ingredient found in Eagle 20EW. It delivers curative and preventive control for a broad range of fungi, including brown patch and red thread, with effectiveness across turf and ornamentals. Gravex 20 EW provides internal leaf-to-root protection, offering post-application suppression and ongoing prevention for extensive turf fungal challenges.
Jonathan Green Lawn Fungus Control
Jonathan Green Lawn Fungus Control is a broad-spectrum granular product that targets more than 20 soil-borne diseases, including brown patch, red thread, and dollar spot. It is designed for use on both cool and warm-season grasses, and can be applied during ongoing seeding. The product emphasizes prevention, reducing the likelihood of recurrent infections, and is formulated for 5,000 sq. ft. coverage, helping maintain a healthy lawn ecosystem across seasons.
Atticus Artavia 2 SC Azoxystrobin Fungicide
Artavia 2 SC uses 22.9% azoxystrobin to deliver systemic protection from leaves to roots. It targets more than 20 turf fungi and 30 ornamental fungi, including anthracnose, brown patch, leaf spot, and rhizoctonia. The product’s internal movement within the plant helps defend new growth and established areas, providing comprehensive turf protection against a wide spectrum of diseases.
Buying Guide
Key considerations when choosing a lawn fungicide include spectrum of activity, preventive vs. curative capabilities, coverage area, and the plant types you maintain. Consider the following:
- Active ingredient and target diseases: Azoxystrobin, myclobutanil, and multi-disease formulations offer broad protection but verify compatibility with your grass type and local conditions.
- Mode of action: Systemic (inside the plant) versus contact (surface)—systemic products often provide longer-lasting protection and can reach new growth more effectively.
- Application timing and frequency: Some products are best applied at first signs of green-up or based on a preventive schedule; others are more responsive to active symptoms.
- Coverage and dilution: Ensure the product covers your lawn size and follow label recommendations to avoid over- or under-application.
- Environmental and safety considerations: Choose formulations appropriate for pets, children, and non-target organisms where applicable; consider organic options if your lawn requires them.
- Combination use with fertilizer or seed: Some products are compatible with seeding and can be used during lawn renovation; check the label for any sequence requirements.
Selecting a multi-disease solution that offers both preventive and curative action can simplify lawn care, reducing disease outbreaks while keeping turf resilient through seasonal changes. For lawns facing frequent fungal pressure or mixed disease profiles, a product with systemic movement and broad-spectrum activity may deliver the most consistent protection while supporting healthy growth.