best herbicide to kill weeds in lawn Certainty Turf Herbicide 1.25 oz – Sulfosulfuron Sedge Killer

best herbicide to kill weeds in lawn Certainty Turf Herbicide 1.25 oz – Sulfosulfuron Sedge KillerCertainty is a selective, post emergent herbicide designed specifically for use in established warm season turf. It targets some of the most difficult to control weeds including nutsedge and unwanted cool season grasses without harming desirable warm season turf when applied properly. Ideal for homeowners and professionals managing Bermuda, Zoysia, St. Augustine, and other warm season lawns. Approved Turf Types Bermudagrass Zoysiagrass St.

Certainty® is a selective, post-emergent herbicide designed specifically for use in established warm-season turf. It targets some of the most difficult-to-control weeds — including nutsedge and unwanted cool-season grasses — without harming desirable warm-season turf when applied properly.

Ideal for homeowners and professionals managing Bermuda, Zoysia, St. Augustine, and other warm-season lawns.

Approved Turf Types

• Bermudagrass
• Zoysiagrass
• St. Augustinegrass
• Bahiagrass
• Centipedegrass
• Buffalograss
• Seashore Paspalum
• Kikuyugrass

Do not apply to cool-season lawns such as Tall Fescue or Kentucky Bluegrass.

What Certainty Controls

• Purple and Yellow Nutsedge
• Kyllinga species
• Globe and Annual Sedge
• Annual Bluegrass (Poa annua)
• Unwanted Tall Fescue
• Perennial Ryegrass (transition removal)
• Virginia Buttonweed (suppression)

Certainty is especially valuable for removing cool-season grasses from warm-season turf during spring transition.

When to Apply

• Apply to actively growing weeds
• Avoid mowing 2 days before or after treatment
• Apply during warm, growing conditions for best uptake
• Use a non-ionic surfactant for optimal performance

Application Rates (Per 1,000 sq ft)

Standard Rate: 0.028 oz per 1,000 sq ft

• Repeat in 3–4 weeks if needed
• Higher rate of 0.045 oz per 1,000 sq ft for dense infestations

Important: Always measure carefully. Certainty is highly concentrated and applied at very low use rates.

Why Choose Certainty?

• Highly selective for warm-season turf
• Excellent nutsedge control
• Effective Poa annua management
• Removes unwanted ryegrass and fescue during transition
• Professional-level results with small application amounts

Certainty® is the go-to solution for precision weed control in warm-season lawns — especially when managing sedges and cool-season grass contamination.

Always read and follow the product label. Use only on labeled turf species.