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SedgeHammer + Herbicide kills nutsedge without injury to turfgrass, established ornamentals, shrubs, and/or trees. SedgeHammer Plus (+) provides post-emergence control of both purple nutsedge and yellow nutsedge. This nutsedge killer herbicide also controls many broadleaf weeds and suppresses kyllinga. Nutsedge is controlled after emergence in cool and warm season turf grasses such as St. Augustinegrass, Bermudagrass, Kentucky Bluegrass, tall and fine fescue, and perennial ryegrass. Sedgehammer + is considered one of the more "gentle to turfgrass" nutsedge killers and pets and people can return to the treated area once the spray dries.
The “+” (plus) in SedgeHammer + indicates that it already contains a non-ionic surfactant. This saves you time and money – no additional product is needed and no extra time spent mixing in additional product. The surfact helps the Sedgehammer Plus spray spread across and penetrate into the waxy leaves of nutsedge more easily. The surfactant also helps with water dispersion, ensuring the spray is even across the leaf for absorption into the vascular system of the plant.
Product Features:
Each 13.5 gram packet will treat 1,000 sq. ft.
For larger areas, consider using SedgeHammer Herbicide in the 1.33 oz. bottle, which treats up to 40,000 sq. ft.
Product Documents
| Active Ingredient | Halosulfuron-methyl 5% |
|---|---|
| Target pests | Purple Nutsedge, Yellow Nutsedge, Kyllinga |
| For use in |
Turfgrass, Landscaped areas, and other non-crop areas * See label for complete list |
| Application | Mix 1 packet in 1 gallon of water to cover 1000 sq. ft. |
| Yield | 1 packet covers 1000 sq ft. |
| NOT FOR SALE TO |
AK VT (Restricted To Licensed Applicators Only) |
| Shipping Weight | 0.06 lbs |
| Manufacturer | Gowan |
| UPC | 714654514980 |
| EPA Registration | 81880-24-10163 |
SedgeHammer + is a water-soluble granule formulation that is mixed with water and applied to target plants with a sprayer. SedgeHammer Plus nutsedge killer herbicide is a member of the sulfonylurea family, an ALS (acetolactate) enzyme inhibiting herbicide. The active ingredient is absorbed into leaf tissue as quickly as 24 to 48 hours after application, then translocated through the plant’s vascular system. The herbicide quickly inhibits amino acids, halting cell division and plant growth in both roots and shoots, causing eventual death in target plants.
Purple Nutsedge, Yellow Nutsedge, Kyllinga
WEEDS CONTROLLED WITH SEDGEHAMMER +: Purple Nutsedge, Yellow Nutsedge, Green Kyllinga, Annual Kyllinga, Cocklebur, common Sunflower, common Ragweed, giant Ragweed, Pigweed, Velvetleaf, Horsetail
Additional weeds controlled with SEDGEHAMMER+ (small packets) only: Burcucumber (suppression), Corn Spurry, Rice Flatsedge, Philadelphia fleabane, Galinsoga, common groundsel (preemergent only), Jimsonweed (preemergent only), Kochia (suppression), Ladysthumb, common Lambsquarter (preemergent only), Venice Mallow (suppression), common Milkweed (suppression), honeyvine Millkweed (suppression), Morningglory (suppression), wild Mustard, redroot Pigweed, smooth Pigweed, common Poweweed, Purslane (preemergent suppression), wild Radish, Shepherds purse (suppression), Pennsylvania Smartweed
SedgeHammer + Herbicide is a selective, post-emergent herbicide concentrate designed specifically to kill nutsedge and other broadleaf weeds without injury to turfgrasses, established ornamentals, shrubs, or trees. This nutsedge killer herbicide can be used in both warm-season and cool-season turfgrasses, landscaped areas, and other non-crop areas.
SedgeHammer + will not prevent germination of most labeled target weeds. Rather, it should be applied to actively growing weeds. If turfgrass or nutsedge is under stress, poor control may result. Also, desirable turfgrass, ornamentals, and trees should be well established before application. Do not apply to edible plants or gardens.
*Note that weeds can develop resistance to herbicides. To minimize the potential for resistance development and/or to control resistant weed biotypes, use a variety of cultural, mechanical, and chemical weed control tactics. Rotate with herbicides having other modes of action.
ACTIVE INGREDIENT: 13.5 g package – Halosulfuron-methyl 5%
SedgeHammer + is a powder concentrate to be diluted with water and applied with a pump sprayer. SedgeHammer Plus nutsedge killer should not be applied with hose-end sprayers since they are far less accurate than hand pump sprayers. When applying, spray the weeds thoroughly and wet the entire leaf surface of the undesirable plants. For best results, spray nutsedge after it has reached the 3 to 8 leaf stage of growth.
SedgeHammer + often works with one application, but depending on the size and age of the nutsedge a second treatment may be required 6 to 10 weeks after the initial treatment. See “Other Tips” below for more information.
The 13.5 gram packets already contain a surfactant, so you only need to mix the contents of the packet itself with a gallon of water. See below for further details. Always read the product label completely before use.
Each 13.5 g packet makes 1 gallon of finished solution and already contains a surfactant. Each gallon of finished solution covers approximately 1,000 square feet.
Standard Application Dilution rates / Mixing Ratios for SedgeHammer +:
*13.5 g packet – Entire contents of 1 packet (0.5 oz.) per gallon of water – Ideal for spot treatments. For treating larger areas, consider SedgeHammer Herbicide in the 1.33 oz. bottle.
Commercial and residential turf and other non-crop sites including: airports, cemeteries, fallow areas, golf courses, landscaped areas, public recreation areas, residential property, roadsides, school grounds, sports fields, landscaped areas with established woody ornamentals, fairgrounds, race tracks, tennis courts, campgrounds, and rights-of-way
Tolerant Turfgrasses – Cool-Season: creeping Bentgrass, Kentucky Bluegrass, fine Fescue, tall Fescue, perennial Ryegrass; Warm-Season: Bahiagrass, Bermudagrass, Buffalograss (Sedgehammer+ only), Centipedegrass, Seashore pasapalum, St. Augustinegrass, Kikuyugrass, Zoysiagrass
SedgeHammer + is not labeled for indoor use of any kind.
See general mixing instructions, mixing rates, and application details above.
Established woody ornamentals in landscaped areas – Apply as a post-directed spray. Avoid contact of this product to leaves of desirable plants since foliar injury, discoloration or death may result.
Horsetail Control – SedgeHammer + (small packets): Apply 1 oz. (27 g or 2 pouches) per 1,000 square feet after horsetail has leafed out. SedgeHammer (bottle): Apply 2 2/3 oz. per acre, or 1.8 g per 1,000 square feet.
This rate of product will control horsetail that is less than 6 inches tall and suppress horsetail that is greater than 6 inches tall. Herbicide symptoms are likely to show within 2 weeks as a necrotic ring at the base of the plant, even though the leaves and stems remain green and a deep leathery green in color.
Compare to: ProSedge Herbicide
It works!
By Charles on 06/20/2010
I've been fighting nutsedge for several years using nutsedge and crabgrass control products. They were disgustingly ineffective. I read of other people's experience with SedgeHammer on a daylily web page and decided to try it. Two days after spraying, the nutsedge started turning brown. Of equal importance, the daylilies surrounding it did not. They show no evidence of ever being near an herbicide. Am I satisfied? You bet!
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403 of 413 people found this review helpful
Sedgehammer - THE solution for nutsege
By Len on 09/02/2010
This hot, dry summer we've been having here in Tidewater, Virginia has been awful for the fescue we grow here but perfect for nutsedge. My infestation was extensive. A few tips: Follow all the advice given in the instructions. Make sure the nutsedge has almost a week of growth on it; this is important. If the sedge is too small or you try to use it on a freshly cut lawn, the sedge won't have enough surface area to absorb sufficient herbicide to be effective. Also, make sure you sure use surfactent with the hebicide, it will help this very expensive chemical be absorbed more effectively by the sedge. Give the chemical time to work; the longer you can wait before mowing after application (I waited almost a week before mowing) the better the killoff. By that time (a week after application) I had an almost 95% killoff, the few live sedges were those few I had missed on the first application. One more application on the stragglers will finish the job.
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312 of 317 people found this review helpful
Sedgehammer
By Gary on 07/16/2010
I hate nut grass. It has been a problem for me from my first yard. I have used Roundup with an eye dropper and even a hypodermic syringe to kill the stuff. Then a man recommended SedgeHammer. The price was a little frightening but my resolve was firm. I bought it from DoMyOwnPestControl.com, received it promptly and used it with great success. The yellow nut grass began dying in 3 days and now is gone. I don't know if it will remain "gone", but I have enough of the stuff to "kill" it repeatedly.
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228 of 237 people found this review helpful
SedgeHammer Works!
By Angela on 09/06/2010
Despite the fact that SedgeHammer is very expensive, I do not regret purchasing it because it WORKS! I bought the largest bottle which I think makes up to 40 gallons. So, I'll have enough to last me a few years. I recommend using an herbicide pump sprayer. I bought a Round-Up brand 2-gallon sprayer for $20 and it allows me to not waste as much SedgeHammer as I would if I used a watering can. I had A LOT of well-established sedge. About 7-10 days after the first application the sedge turned yellow and stopped growing and the grass was NOT harmed. I just did a second application because I had missed a lot sedge plants during the first application. This product is worth the $$.
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188 of 197 people found this review helpful
The Sedge Gets Hammered
By Dennis on 07/07/2010
I have been using this product for several years, and have found it to be the most effective for control of sedge, particularly in beds and around ornamentals in combination with Roundup. Because I am blessed with rich soil, everything grows well - sedge too; so control of sedge is an ongoing battle. The granular form of the product is convenient and easy to measure with the included measuring spoon.
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134 of 144 people found this review helpful
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1 of 1 people found this answer helpful
I have nutsedge in a flower bed with plants, and I need to mulch the bed. How long after I spray the nutsedge can I mulch? I assume I should spray and not remove the nutsedge immediately but wait several weeks after mulching to pull them?
Using SedgeHammer Plus Herbicide the nutsedge itself takes about 3-6 weeks to die in some cases, so realistically you could mulch pretty close after if you are mulching over where you applied the Sedgehammer and where the sedge is growing.
SedgeHammer may not be the best option for you. It is meant more for nutsedge control in turf grass and it cannot be used in or around a vegetable garden or anything edible. It remains in the soil for up to 3 years so the manufacturer recommends that you not plant anything edible in an area where SedgeHammer has been applied for at least 3 years. For nutsedge control in or around a vegetable garden, it is recommended to spot-treat the sedge with a glyphosate or RoundUp-type product directly. With this type of product, it is only necessary to wait 2-3 weeks after application to plant vegetables or anything else. We would recommend Roundup QuickPro 1.5 oz. packs for ease of use.
Also, you should not just pull the plants. This will just split off the rhizome and more new plants will grow from the nutlets left in the soil. To completely remove the plants, you would need to completely dig out the nutlets so that new plants do not grow from them. Many folks will still till the soil after using RoundUp to be sure there are no remaining nutlets that will grow new plants.
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0 of 1 people found this answer helpful
If not, is there something you can recommend?
We've had a warm winter in Pennsylvania and the sedge has popped up in mid-February and is actively growing. It's been in the 40s and 50s, but the night temperatures are around freezing many nights. Can I apply it now or is that a waste? Should I wait until at least it isn't freezing at night?
I have active growing nutsedge and poa annua in my lawn. In places, it is intermixed with each other. I'd like to spray 'control' agent to both of these weeds in one application.
For best results when applying, SedgeHammer Herbicide applications should be made when temperatures are between 60 to 70 degrees or when the nutsedge has reached the 3 to 8 leaf stage of growth. Do not apply when temperatures are above 85 degrees.
My Sedgehammer order arrived while I was away. Consequently it was exposed to freezing temperatures for a few days. Is it harmed?
I have some new turf laid and unfortunately 2 weeks later it is full of nut grass. Can I use a watering can with sedgehammer over all the lawn? Will it kill the lawn? It's such a large area I think it would be impossible to spray without over spray.
Purchased tenacity from you to kill some weed and it worked as stated. Now we have this nutsedge traveling in from our neighbors yard. Is this safe for centipede?
Yes, SedgeHammer Plus Herbicide is safe for centipede grass. Tenacity Herbicide would be a great option for you to control nutsedge without harming your Centipede lawn.
Once SedgeHammer has been mixed with water, it should be used or discarded within 24 hours of dilution.
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2 of 2 people found this answer helpful
SedgeHammer Plus Herbicide should not injure turfgrasses as long as the lawn is established and sufficient water volume of atleast 1 gallon of water was used to apply 13.5g evenly over a 1000 sq ft area. Applications should be avoided during the heat of the day (65-85 degrees) and recommended to be done in the early morning or late afternoon/evening when temps are at their coolest.
If the turfgrass is under stress from heat, drought, diseases, insects, etc – these are all factors that can cause herbicides to injure turfgrasses.
Please view the full product label for more information.
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1 of 1 people found this answer helpful
SedgeHammer Herbicide can be applied in early morning or later in the evening when temperatures are between 65-85 degrees and not at the highest for the day. If there is a light dew on the grass, this should not affect the application.
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2 of 2 people found this answer helpful
I purchased a couple packets of Sedgehammer + to treat my front and back yards that are infested with it this year. My front is 1k square feet, my back about 500 square feet. Would one packet be effective covering all 1500 square feet if I dissolve it in a bit more water or should I use one packet for the front and another for the back? If one packet per section, any advice on how to dispose of the excess I'd have left from the back yards application?
SedgeHammer Plus Herbicide
Rating: 4.5 (834 Reviews / 290 Q&A)
