Sedgehammer Plus Turf Herbicide 13.5g – Powerful Nutsedge Killer for Lawns, Golf Courses & Sports Fields

Description

Sedgehammer Plus is a selective post-emergent turf herbicide specially engineered as a nutsedge killer. Its active ingredient, halosulfuron-methyl (75%), targets the sedge’s growth points and tubers, completely eliminating yellow and purple nutsedge from lawns, sports fields, golf greens, and other turf areas. This USA-made formula comes in convenient 13.5-gram water-soluble packets that already contain a dry surfactant, so you can easily mix it in water without extra chemicals. Simply pour a packet into one gallon of water and spray—the solution will treat up to 1,000 sq ft of grass.

Unlike generic weed killers that often miss nutsedge (since it’s a sedge, not a broadleaf or grass), Sedgehammer Plus is proven to work. Purdue Extension notes that only specialty herbicides like halosulfuron or sulfentrazone can control nutsedge, and Sedgehammer Plus uses this very chemistry. It is effective on both major nutsedge species (yellow and purple) and many problem weeds (e.g. wild mustard, pigweeds, cocklebur) without harming desirable turf.

This product is pet- and lawn-safe when used as directed. The formulation is “gentle to turfgrass” – safe on St. Augustine, Bermuda, Kentucky bluegrass, tall/fine fescue, and other lawn grasses. Once the spray dries, children and pets can play on treated areas with no risk. Plus, each packet is very cost-effective: a single 13.5g pack replaces multiple bottles of conventional weed spray, covering a full 1,000 sq ft for just a few dollars.

With Sedgehammer Plus, achieving a weed-free lawn is easy. The ready-to-use format and clear mixing instructions suit both DIY homeowners and busy lawn professionals. Every packet is pre-measured and pre-mixed with surfactant, so there’s no confusion. You just mix, shake, and spray – that’s it. The product’s instructions are straightforward, ensuring that even first-time users can apply it with confidence. For stubborn nutgrass patches that seem to defy ordinary herbicides, Sedgehammer Plus delivers the powerful, precise control you need.

Benefits of Using This Product

• Total Nutsedge Elimination: Targets underground tubers and rhizomes, not just foliage, for thorough eradication of nutgrass.
• Broad Weed Spectrum: Tackles many additional lawn weeds beyond nutsedge, giving your turf comprehensive protection.
• Time and Labor Savings: No hand-pulling weeds or repeated spot treatments needed. A single treatment per season (up to 4 times a year) keeps weeds at bay.
• Long-Term Control: Reduces nutsedge tuber buildup over time. As Purdue Extension advises, consistent use of herbicides like halosulfuron is key to eliminating nutgrass over several seasons.
• Lawn-Friendly: Unlike non-selective weed killers, Sedgehammer Plus preserves your grass. Its turf-safe formula means you get a healthy, green lawn with the weeds gone.

Specifications

• Active Ingredient: Halosulfuron-methyl (75%)
• Form: Water-soluble granules in 13.5g packet (with integrated non-ionic surfactant)
• Coverage: 1 packet per 1,000 sq ft (mix with 1 gal water)
• Turf Types: Safe for cool- and warm-season grasses (e.g. St. Augustine, Bermuda, Kentucky bluegrass, fescues)
• Application: Post-emergent spot or broadcast spray (as soon as nutsedge appears)
• Re-entry: Area safe for people and pets after spray dries (typically a few hours)
• Frequency: Up to 4 applications per year (with at least 30-day intervals)
• Net Weight: 13.5g per packet (0.475 oz)
• Manufacturer: Gowan Company (USA)

How to Use

1. Mix: Add one 13.5g packet to a clean 1-gallon sprayer. No need for extra surfactant – it’s already built in. Stir or shake the mixture to dissolve completely.
2. Apply: Spray evenly over 1,000 sq ft of infested lawn, thoroughly wetting nutsedge foliage and surrounding soil. Ensure good coverage but avoid excessive overlap.
3. Timing: Treat nutsedge when it is actively growing (spring through early fall). For best results, apply 2 days before or after mowing, on a calm day with no rain expected.
4. Coverage: Use one gallon of spray per 1,000 sq ft. If treating a larger area, prepare multiple gallons in the same ratio. Use the mixed spray within 24 hours.
5. Safety: Keep people and pets off the area until the spray has completely dried (usually a few hours). Do not apply more than four times per year.
6. Aftercare: Mow the lawn 2 days before or after application to maximize herbicide uptake by nutsedge. Monitor the area and retreat if new nutgrass emerges.

Why Choose This Product

Sedgehammer Plus stands out as a professional-grade nutsedge killer that’s now accessible to homeowners. Its precision formula is based on industry-standard chemistry (halosulfuron) that turf experts and extension services recommend for nutgrass control. Unlike general-purpose weed sprays, this product is proven for your specific problem – indeed, Sedgehammer is often cited as the #1 nutsedge control solution on the market.

The “Plus” version adds even more convenience: every pack is preloaded with surfactant, eliminating mixing guesswork. You get consistent results each time. It’s also a smart choice for value: at roughly the cost of a few cups of coffee per packet, you cover 1,000 sq ft of turf with a high-quality herbicide. And because it’s made in the USA under strict quality controls, you know you’re getting a reliable product.

Whether you’re a homeowner sick of digging out nutgrass or a pro managing athletic fields, Sedgehammer Plus delivers targeted, proven performance. With this nutsedge killer, achieving a lush, weed-free lawn is straightforward and stress-free.

FAQs

• How does Sedgehammer Plus kill nutsedge?
  Sedgehammer Plus uses halosulfuron-methyl, which is absorbed by the foliage and transported to the roots and tubers of nutsedge. This systemically kills the weed at its source. Because nutsedge spreads via underground tubers, this post-emergent action is essential for true control.

• Is it safe for my lawn and pets?
  Yes. Sedgehammer Plus is selective for sedges and won’t harm established turfgrasses. It won’t burn or discolor your lawn when used as directed. Once the spray dries (usually within a few hours), people and pets can return safely to the area.

• How long before I see nutsedge die?
  Nutsedge control is not instant. You will typically see yellowing or browning of nutsedge foliage within 1–3 weeks after application. Halosulfuron works more slowly than some contact herbicides, so be patient. In the meantime, any new shoots should be treated before they produce new tubers. Often 2–3 treatments over a season will significantly reduce nutgrass populations.

• How many times can I apply Sedgehammer Plus?
  You can apply up to 4 treatments per year on the same area. It’s best to wait 3–4 weeks between treatments to allow full effect and to target any newly emerged nutsedge. Overdoing it can stress turf, so follow label instructions carefully.

• Can I use Sedgehammer Plus on any grass type?
  Sedgehammer Plus is safe on most common lawn grasses. It is labeled for use on both warm-season grasses (like Bermuda, St. Augustine, zoysia) and cool-season grasses (like Kentucky bluegrass, ryegrass, fescue). This versatility makes it suitable for nearly any lawn, park, or sports field.

Final Verdict

If stubborn nutgrass is ruining your lawn, Sedgehammer Plus is a smart, effective fix. It delivers professional-grade nutsedge control in an easy-to-use packet, giving you back your healthy turf with minimal fuss. With its built-in surfactant, broad weed spectrum, and proven chemistry, this product makes a visible difference in even the toughest cases. Safe on grass and pets, cost-effective on coverage, and highly rated by users, Sedgehammer Plus is our top recommendation for anyone seeking a reliable nutsedge killer.