Post-Emergent Herbicide Catalog

Sedgehammer Turf Herbicide - 1.33 Oz.

Gowan Company, LLC


Sedgehammer Turf Herbicide

Sedgehammer is a selective herbicide for the control of nutsedge and other weeds in turfgrass and landscaped areas.

  • Controls yellow and purple nutsedge and certain tough broadleaf weeds like horsetail, as well as suppressing green kyllinga
  • Low use rate (1 1/3 oz/Acre or less) or .9 grams per 1000 square feet
  • Controls nutsedge by moving through the plant and 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 treated area once spray dries


Active ingredient: 75% Halosulfuron-methyl

Customer Reviews

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Based on 18 reviews Average Rating 4.72 stars out of 5
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  • J
    Joseph d hren J. D. H. Joseph d. h.
    21-08-2025

    Kill nutsedge

    That weed was really bad this year in the Chicago area. Sedgehammer is killing it!'

  • P
    Pat Sommala P. S. Pat S.
    20-08-2025

    Refunded

    Was refunded in full with no issues. Thanks.

  • A
    Anthony Napolitano A. N. Anthony N.
    14-08-2025

    The jury is still out

    I put it down on the 10 th. While it was approximately 4 inches. Then a couple A couple day later applied again next day it was cut. I’ll let you know if it comes back.

  • R
    Rance Carter R. C. Rance C.
    14-08-2025

    Great purchase experience!

    Everything arrived early and exactly as ordered!

  • D
    Diane Merrill D. M. Diane M.
    17-07-2025

    Sledgehammer review

    I just applied the first application and waiting to see the results. I will reapply if necessary. I have tried other products without any success. I hope this works!

  • J
    John Bovender J. B. John B.
    08-07-2025

    Best nutsedge killer

    This stuff works great. It does exactly what the directions say it will do.

  • R
    Rubin B Williams R. B. W. Rubin B. W.
    26-06-2025

    Sledgehammer

    It was delivered on time

  • F
    Francoeur, Louis F. L. Francoeur, L.
    22-06-2025

    Poor customer service

    Ordered product and after a week, it was still not shipped. Tried to call them several times, but they don’t answer their phone and don’t have voicemail. Very slow to respond to their email via their contact page. Stated that they finally shipped on Friday and that it’s on his way. We’ll wait and see what happens. Overall a very poor Company to work with concerning their communication.

  • B
    Barbara Menzies B. M. Barbara M.
    21-05-2025

    I’ve used this product in the past and chose to get again as it works very well in controlling nursed and kylinna

    see above

  • D
    David PESQUIRA D. P. David P.
    19-04-2025

    Sedgehammer Turf Herbicide

    Received but have not used just yet.

  • R
    Randall Jones R. J. Randall J.
    07-09-2024

    Package Arrived

    Package of sledgehammer arrived quickly and in perfect condition.

  • P
    Patricia Allen P. A. Patricia A.
    25-07-2024

    Nutgrass...Sedgehammer

    Sedgehammer Turf Herbicide is the only product that works on nutgrass. I have tried other products but they don't work...this works!

  • S
    Steve Hardeman S. H. Steve H.
    18-06-2024

    Great product

    I have used Sedgehammer for a while it has a short label but lives up to name. Seed world shipped fast and accurate will be back

  • E
    Elizabeth Ricci E. R. Elizabeth R.
    06-06-2024

    Sedge killer

    Great product, works slowly but gets the job done!

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