Interface Stressgard Fungicide

Interface Stressgard Fungicide, manufactured by Envu, is a unique broad-spectrum fungicide that provides contact and systemic protection against a wide range of turf diseases and includes a special formulation to help reduce turf stress.

The name “Interface” speaks to its dual-action formula it forms a barrier at the turf surface while also moving into plant tissue to suppress disease internally. Paired with Stressgard Technology, this product goes beyond disease control to enhance turf health, color, and recovery. In other words, Interface Stressgard Fungicide doesn’t just fight disease it keeps your turf looking championship-worthy under pressure.

Interface Stressgard Fungicide is a premium turf management solution designed to deliver broad-spectrum disease control while enhancing turf resilience and visual quality. Its advanced formulation sets it apart by improving turf color, density, and stress tolerance, making it ideal for golf courses greens, tees, fairways, and other turf areas.

Tools Needed

A handheld pump sprayer or backpack sprayer can be used. 

How to Use

• Step 1: Determine how much Interface Stressgard Fungicide to use by measuring the square footage of the treatment area. Find the square footage by measuring the treatment area's length and width in feet, then multiplying them together (length X width = square footage). Depending on the disease, apply 3 to 7 fl. oz. of Interface Stressgard Fungicide in 0.5 to 10 gallons of water per 1,000 sq. ft. Do not exceed a total of 30 fl. oz. of product per 1,000 sq. ft. per year. Do not make more than 6 applications per year.
• Step 2: Fill the sprayer with half the amount of water, add the proper amount of fungicide, and then pour in the remaining half of the water. Close the tank lid and shake well until mixed.
• Step 3: Spray the top and bottom of leaves until wet, but not to the point of runoff. Do not drench. Repeat at 14 to 21-day intervals as long as required.

Where to Use

Interface Stressgard Fungicide can be used on golf courses, sod farms, and institutional areas where fine turf is grown.

Use of this product at residential sites is prohibited.

For golf courses only, do not apply to turf cut higher than 1 inch on golf holes where water bodies are present.

When to Use

Apply in the spring, summer, and fall before diseases appear.

Safety Information

Interface Stressgard Fungicide is safe for people and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when mixing and applying this product. 

Keep people and pets out of the treated area until 24 hours have passed after application. 

Special Considerations

Except for use on golf courses, if applying this product adjacent to a water body such as a lake, reservoir, river, permanent stream, marsh or natural pond, estuary, or commercial fish pond, there must be at least a 25-foot vegetative buffer strip between the water body and the point of application.