Sulfentrazone Solutions for Problematic Turf Weeds Heading into Fall

Late summer and early fall are critical times for turfgrass weed control. While many warm-season turf managers begin preparing for cooler temperatures, troublesome weeds such as yellow nutsedge, green kyllinga and broadleaf weeds often remain actively growing. This creates an ideal window for weed burndown to limit weeds from producing additional seeds, tubers, or vegetative growth uninhibited.

Sulfentrazone, a Group 14 (WSSA) herbicide, is one of the industry's most trusted active ingredients for turfgrass weed management. Known for its rapid burndown activity and strong performance on sedges and kyllingas, sulfentrazone serves as the foundation of several Envu solutions designed to tackle problematic weeds across warm- and cool-season turf. When combined with complementary active ingredients, sulfentrazone can provide broader-spectrum control and improved performance on difficult-to-manage species.

What Makes Sulfentrazone Effective?

Sulfentrazone is a Group 14 herbicide that rapidly disrupts plant cell membranes, resulting in quick symptom development and visible weed control. It is particularly effective on sedges, kyllingas and many broadleaf weeds —making it a valuable option for golf courses, sports fields, commercial properties and residential turf. In premix formulations, sulfentrazone can also complement active ingredients that target annual grasses, difficult broadleaf weeds, or underground reproductive structures such as nutsedge tubers.

Warm-Season Problematic Weeds

Yellow Nutsedge and Green Kyllinga

Yellow nutsedge is easily identified by its glossy yellow-green leaves, rapid growth rate and triangular stem. Green kyllinga forms dense mats and produces small round seedheads that often extend above the turf canopy.

Dismiss^® Turf herbicde contains sulfentrazone, providing rapid postemergence control of sedges, kyllingas and broadleaf weeds providing visible results in 24-28 hours. The formulation in Dismiss Turf provides surface and soil action, preventing tubers. Dismiss NXT herbicide combines sulfentrazone + carfentrazone-ethyl, expanding broadleaf control while improving speed of activity and enhancing suppression of nutsedge tubers. When using Dismiss NXT, results are visible in as little as 24-48 hours, eliminating tough sedges fast before they turn into callbacks.

Cool-Season Problematic Weeds

Clover, Dollarweed and Other Broadleaf Weeds

As cool-season turf growth slows, broadleaf weeds often become more apparent. Clover develops its characteristic trifoliate leaves and dollarweed thrives in moist environments.

Terradex™ Quick Strike herbicide combines 2,4-D + MCPA + dicamba + sulfentrazone, delivering multiple modes of action for broad-spectrum broadleaf weed control while adding activity on sedges. Terradex Quick Strike is rainfast in 6 hours and works quickly with visible results in 24-48 hours and plant death occurring within 10-14 days. For golf course superintendents, Echelon^® herbicide’s patented formulation is both root and shoot absorbed. Echelon combines prodiamine + sulfentrazone, providing preemergence annual grass control while contributing activity on yellow nutsedge and select broadleaf weeds. Echelon 4SC herbicide is truly unique in the way it reduces follow-up applications by controlling other weeds, including preemergence and postemergence sedges and a variety of broadleaf weeds. Dismiss NXT contains sulfentrazone and carfentrazone for rapid burndown of most broadleaf weeds plus faster control of sedges. Blindside^® is labelled for warm-season turf and contains sulfentrazone and metsulfuron.

Get Expert Help with Problematic Weeds

Successful turfgrass weed management starts with accurate identification and selecting the right active ingredients for the target species. Whether you're managing yellow nutsedge, green kyllinga, or persistent broadleaf weeds, the sulfentrazone-based portfolio from Envu^® offers flexible solutions for both warm-season and cool-season turf. For detailed questions about problematic weeds, application timing, or product selection, contact your Envu representative or reach out to the Green Solutions Team for expert guidance.

Quick Reference: Common Turf Weeds and Sulfentrazone-Based Solutions

Yellow Nutsedge

Identification: Glossy yellow-green leaves, rapid growth, triangular stem
Key active ingredients: Sulfentrazone; sulfentrazone + carfentrazone-ethyl; sulfentrazone + imazethapyr
Recommended products: Dismiss Turf, Dismiss NXT, Dismiss South

Green Kyllinga

Identification: Dense mats with small round seedheads
Key active ingredients: Sulfentrazone; sulfentrazone + carfentrazone-ethyl
Recommended products: Dismiss Turf, Dismiss NXT, Solitaire

Broadleaf Weeds (Clover, Dollarweed and Others)

Identification: Broad leaves and non-grass growth habits
Key active ingredients: Sulfentrazone + metsulfuron-methyl; 2,4-D + MCPA + dicamba + sulfentrazone
Recommended products: Blindside, Terradex Quick Strike, Dismiss Turf, Dismiss NXT