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Prostar 70 WG Fungicide
ProStar 70 WG, manufactured by Bayer, is known best for its consistent control of fairy ring in both preventative and curative measures. It is also very effective on many other types of fungal diseases on turfgrass and ornamental nurseries that may be at risk of being infected.
Prostar 70 WG prevents turf grass fungi from growing normally and works systemically by penetrating host tissue. The formulation allows for a longer residual than the average contact fungicide and is safe to use on almost all cool and warm-season grasses.

Tools Needed
To use Prostar 70 WG Fungicide you will need either a hose end sprayer, handheld pump sprayer, backpack sprayer, or spray rig. For small household jobs, we recommend a handheld 1-gallon pump sprayer or a hose end sprayer.
How to Use
- Step 1: Mow your lawn prior to application.
- Step 2: Mix Prostar 70 WG Fungicide with water into a sprayer of your choice. The amount of product to mix into the sprayer depends on the disease type you wish to control/prevent and weather you want to apply a preventative dose or curative dose. The label contains the details but it can be anywhere from 1.5 oz to 4.5 oz per square feet. Agitate the mixture well.
- Step 3: Spray the fungicide evenly onto the leaf of the plant, placing the sprayer on a fan spray setting for uniform coverage.
- Step 4: Reapply as needed every 2 to 3 weeks depending on the disease and it's severity or for continued protection and fungus prevention.
Where to Use
Prostar 70 WG Fungicide can be used on residential and commercial turf, ornamentals, gardens, conifers, athletic fields and other applicable areas where there are fungal disease problems.
When to Use
Use Prostar 70 WG Fungicide upon first seeing a fungus or disease on your plants or as a preventative measure against disease during the growing season.
Safety Information
Make sure to wear the proper PPE when applying this product (goggles,gloves, face mask etc). The product is safe for pets and children if used according to label directions. After treatment, keep pets and children away from the treated area until the product as dried.
Special Considerations
Make sure to read the label prior to purchase and check to see if the product is labeled to treat your infected plant and disease type.
| Restricted Use | No |
|---|---|
| Shipping Restrictions | AK, CT, HI, IL |
| Availability | Online |
| Signal Word | CAUTION |
| Keith's Pro Tip | "Depending on the fungus disease you are dealing with, you may need to do repeat applications of Prostar WG every 14 to 21 days until the disease is removed." |
| Time to Kill | Prostar 70 WG Fungicide will take up to 2 weeks to witness curative results. |
| Chemical Type | Fungicide |
| Formulation | Water Dispersible Granule (WDG) |
| Application Methods | Broadcast Spray, Spot Treatment |
| Product Drawbacks | Prostar 70 WG Fungicide is best used for light disease activity, and may require the use of other products for complete disease control. |
| Active Ingredient | Flutolanil - 70% |
| Application Equipment | Pump Sprayer |
| Mix Rate | You will use 1.5 up to 4.5 oz per 1,000 sq ft or 1 gallon of water. For more specific application rates please refer to the label. |
| Use Sites | Outdoors |
| Yield | 3 pounds of Prostar 70 WG Fungicide will cover 10,000 sq. ft. |
| EPA Registration No. | 432-1223 |
| Shelf Life | Prostar 70 WG Fungicide will last for 3 years when stored in its original container and keep tightly closed when not in use. Store in a cool dry place. Avoid cross-contamination with other pesticides |
| Comparable Products | Patch Pro |
| Children or pets? | No |
| Property Characteristics | None |
| Availability | Online |
| Restricted Use | No |
| Brand | BAYER |
| Keith's Pro Tips | "Depending on the fungus disease you are dealing with, you may need to do repeat applications of Prostar WG every 14 to 21 days until the disease is removed." |
| Product Drawbacks | Prostar 70 WG Fungicide is best used for light disease activity, and may require the use of other products for complete disease control. |
| Target Pests | The ProStar 70 WG fungicide works on a number of fungi including, but not limited to, Brown Patch, Brown Ring Patch, Fairy Ring, Gray Snow Mold, Large Patch, Leaf Spot, Pink Patch, Red Thread, Rhizoctonia Aerial Blights, Rust, Sheath Spot, Southern Blight, and Yellow Patch. For more target pests please refer to the label. |
| Application Equipment | Pump Sprayer |
| Application Methods | Broadcast Spray, Spot Treatment |
| Active Ingredient | Flutolanil - 70% |
| Product Type | Fungicide |
| Formulation | Water Dispersible Granule (WDG) |
| Application Rate | You will use 1.5 up to 4.5 oz per 1,000 sq ft or 1 gallon of water. For more specific application rates please refer to the label. |
| Shelf Life | Prostar 70 WG Fungicide will last for 3 years when stored in its original container and keep tightly closed when not in use. Store in a cool dry place. Avoid cross-contamination with other pesticides |
| Yield | 3 pounds of Prostar 70 WG Fungicide will cover 10,000 sq. ft. |
| Use Sites | Outdoors |
| Time to Kill | Prostar 70 WG Fungicide will take up to 2 weeks to witness curative results. |
| Comparable Products | Patch Pro |
| EPA Registration # | 432-1223 |



