Sedgehammer® Herbicide - Nutsedge Weed Killer

  • $84.99
  • $79.99

SedgeHammer® is a selective herbicide used to kill nutsedge and kyllinga. It controls over 21 weeds and is a safe weed killer that won't kill your grass. A huge bonus to Sedgehammer is that it works on cool and warm-season grasses. There are no temperature restrictions with this herbicide.

  • Controls nutsedge, kyllinga, and more
  • Mixes easily with other herbicides for extended weed control
  • Safe for warm and cool-season grass
  • One bottle covers 43,000 square feet

Sedgehammer gets rid of nutsedge and kyllinga without damaging your lawn. It's easy to apply and works on both warm and cool-season grasses. This is a post-emergent herbicide meaning it works best on weeds that are actively growing.

For best results, we highly recommend using surfactant with Sedgehammer.

You can expect excellent control of the following weeds:

  • Cocklebur, common
  • Corn Spurry
  • Flatsedge, rice
  • Fleabane, Philadelphia
  • Galinsoga
  • Kyllinga, Annual
  • Kyllinga, Green
  • Ladysthumb
  • Mallow, Venice
  • Mustard, wild
  • Nutsedge, Yellow
  • Nutsedge, Purple
  • Pigweed, redroot
  • Pigweed, smooth
  • Pokeweed, common
  • Radish, wild
  • Ragweed, common
  • Ragweed, giant
  • Smartweed, Pennsylvania
  • Sunflower, common
  • Velvetleaf

Active Ingredient: Halosulfuron-methyl 75%

Package Includes: One 1.33 oz bottle and measuring spoon

SedgeHammer Kit Includes: One 1.33 oz SedgeHammer bottle, Surfactant, Blue Marker Dye

Storage: Store in a cool dry place away from direct sunlight. The product will store for 2 years under warehouse conditions.

Sedgehammer can be used on the following grass types: 

Cool Season Lawns - Kentucky Bluegrass, Turf Type Tall Fescue (all fescues), Ryegrass. 

Warm Season Lawns - Bermuda, St Augustine, Zoysia, Centipede, Bahia.

Label: SedgeHammer® Product Label

SDS: SedgeHamer Safety Data Sheet

Application: Battery-powered 4 gallon sprayer with  TeeJet foliar spray tip recommendedIt is not to be applied via a hose-end sprayer. For best results, use non-ionic surfactant with Sedgehammer.

When to Apply: Although there are no labeled temperature restrictions, we don't recommend blanket applications if temperatures are over 100F. If temps are that high, apply in the evening and elect to spot spray instead of blanket spraying.

Coverage: One 1.33oz bottle covers approx 43,500 sq ft (1 acre)

Application rates: One level scoop is added to 1 gallon of water to cover 1,000 sq. ft.

Application sites:

For use in Golf Courses, Sod Farms, Highways, Right-of-Ways, and similar Non-Crop areas, Ornamental Turf-grass (Residential & Commercial), Parks, Cemeteries and Athletic Fields

Does Sedgehammer need to be watered in?

  • No. Sedgehammer works via foliar uptake. Simply spray the weeds you're targeting and allow it to dry.

Can I apply granular fertilizer or Essential-G on the same day as Sedgehammer?

  • Yes. We recommend that granular fertilizer and Essential-G be applied before Sedgehammer.

Can I apply other liquids and Sedgehammer on the same day?

How long does it take for weeds to die after spraying with Sedgehammer?

  • It depends on the weed being targeted and temperature. Most weeds begin to yellow within 14 - 21 days of application.

Should I use surfactant with Sedgehammer?

  • Yes. Sedgehammer produces best results when mixed with non-ionic surfactant.

Are there temperature restrictions with this product?

  • Yes. We don't recommend spraying your lawn with Sedgehammer when temperatures exceed 90F as injury may occur.

How long should I wait before resuming mowing?

  • For best results do not mow 2 days before application and 2 days after. For example, if you plan to spray Sedgehammer on Saturday, your last mow would be on Thursday. You would resume mowing on the following Tuesday.


Shipping: United States Only.

Currently NOT shipping to:(AK,HI). For AZ,CA,OR,WA just a small shipping charge of $3.00 will be applied. 

We can not ship to PO Boxes

Typically delivered in 4 - 7 business days.

Cancellations | Returns | Exchanges: All sales are final, no cancellations, returns, or exchanges