Pest Control
  • SedgeHammer + Nutsedge Killer Herbicide

    Whether you're a homeowner or business owner, keeping your turfgrass, lawn, ornamental plants, and shrubs looking beautiful is a priority. But when you're dealing with pesky sedges like purple and yellow nutsedge, it can be a real challenge. Nutsedge grows quickly, spreads easily, and can cause unsightly damage to your landscape. That's where Sedgehammer herbicide comes in. This Sedgehammer product eliminates nutsedge without harming your other plants.

    Size

    A Selective Herbicide That Gets the Job Done

    With its active ingredient Halosulfuron-methyl 5% concentration, this selective herbicide is perfect for post-emergence control of different types of sedges in established lawns, ornamental turfgrass, and landscaped areas. Sedgehammer herbicide is the proven herbicide for nutsedge control, trusted by professionals. Some of the top Sedgehammer include:

    • Controls yellow and purple nutsedge
    • Non-Ionic Surfactant no longer needed
    • Suppresses green Kyllinga and broadleaf weeds like horsetail
    • Low use rate 13.5 grams per 1,000 square feet
    • Moves through the plant, affecting the underground growing points (rhizomes and tubers)
    • It controls nutsedge after emergence in cool and warm-season turfgrass (including St. Augustinegrass, Bermudagrass, Kentucky bluegrass, tall and fine fescue, and perennial ryegrass)
    • Considered as one of the more “gentle to turfgrass” products
    • Pets and people can return to the treated area once the spray dries
    • Affordable and Easy to Use DIY Solutions

    Affordable and Easy to Use DIY Solutions

    You don't need to hire an expert to get rid of these weeds when we have DIY lawn and garden weed control solutions that work, are affordable, and are easy to use. Nutsedge killer is the perfect solution for your garden, lawn, turfgrass, and landscaping areas. Get this Sedgehammer product now and save up to 80% compared with exterminator costs.

    How to Use Sedgehammer+

    • Open the packet and pour into 1 gallon of water.
    • Mix the solution thoroughly. One packet will cover 1,000 sq ft.
    • DO NOT add any non-ionic surfactant - it is already included in the packet for easy mixing.
    • While spraying, periodically swirl or shake the mixture to keep the product evenly distributed in the water.
    • Do not store the mixed solution as it will degrade and become ineffective within 24 hours of initiating the mix.

    Learn More from Our DIY Experts

    If you're looking for a reliable Nutsedge grass killer to take care of pesky sedges in your landscape or garden, look no further than Sedgehammer+. Our DIY Pest Warehouse experts are here to help you get the job done fast. Order your weed killer now and enjoy free, fast shipping in the U.S.

    Features & Specifications

    Feature

    Specification

    Active Ingredient

    Halosulfuron-methyl 5%

    Formulation

    Beige water dispersible granule with a dry, non-ionic surfactant included

    Available Sizes

    Pack (13.5 grams), Case (12 x 13.5 gram Packs)

    Target Pests

    Purple & Yellow Nutsedge, Kyllinga, and other weeds, including Cocklebur, Corn spurry, Rice flatsedge, Philadelphia fleabane, Galinsoga, Annual kyllinga, Ladysthumb, Wild mustard, Smooth pigweed, and more.

    Application Method

    Mix one packet per one gallon of water to spray 1,000 square feet.

    Use on turfgrass, landscaped areas, and non-crop areas.

    Cannot be used in Alaska. Can only be used by professionals in Vermont.

    Application Equipment

    Hand-pressurized or power-operated sprayers

    Application Rate

    One packet of Sedgehammer+ should be mixed with 1 gallon of water for a 1,000 sq. foot area.

    Indoor/Outdoor Use

    Outdoor use

    Time to Effectiveness

    This product should start working within 24 to 48 hours after application, but may take up to 2 weeks after application to kill plants.

    Residual Activity

    This herbicide often works with 1 application, but depending on the size and age of the plant, a second application may be needed. This should be done 6-10 weeks after the initial application.

    Pet/Child Safety

    Safe for everyone once it dries.

    Odor

    Slightly vanilla

    Shelf Life

    If stored properly in a cool, dry space, it will last 5-7 years.

    Manufacturer

    Gowan

    Special Technology

    Water soluble for easy mixing and application.

    EPA Registration

    Yes - EPA Reg. No. 81880-24-10163


    Downloadable Files

    Frequently Asked Questions

    Q

    Can Sedgehammer be used on all types of grass?

    A

    This herbicide can be used on several different types of grass for suppression or complete eradication. Expect more comprehensive control of these weeds:

    • Corn Spurry
    • Rice Flatsedge
    • Wild Mustard
    • Pigweed
    • Wild Radish
    • Smartweed

    You can suppress burcucumber, kochia, milkweed, shepherd's purse, and morninglory on your lawn with this product. 

    Learn how to get rid of weed grass and other specific types of weeds on our blog.

    Q

    How long does it take for Sedgehammer herbicide to work?

    A

    You can expect plants to absorb this herbicide within 24 to 48 hours after application. Once it moves through a weed’s vascular system, it inhibits amino acids to prevent root and shoot growth. It can take up to two weeks for weeds to die off completely.

    Q

    Is Sedgehammer safe to use around pets and children?

    A

    Yes! Once the spray is dry, your children and pets can safely roam and play. Make sure you follow all instructions on the label for best safety practices.

    Q

    Can this nutsedge killer be used around ornamental plants and shrubs?

    A

    Because it’s considered one of the more gentle herbicides, you can spray this product around turfgrass, shrubs, trees, and other established ornamental greenery safely.

    Q

    What are the instructions for mixing this nutsedge grass killer?

    A

    Wondering how to mix Sedgehammer? Take the entire contents of a single packet (0.5 oz.) and add it to one gallon of water to use for spot treatments. Shake to ensure it’s well mixed, and spray on affected areas.