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Sedgehammer
We highly recommend using a surfactant with Sedgehammer 1.33 ounce bottle. Sedgehammer in the 13.5 gram box already contains surfactant.
SedgeHammer herbicide kills nutsedge without injury to turfgrass, established ornamentals, shrubs, and/or trees. SedgeHammer provides post-emergence control of both purple nutsedge and yellow nutsedge. SedgeHammer 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" products and pets and people can return to the treated area once the spray dries.
Sedgehammer is the exact same product as Manage Herbicide. The Gowan Company purchased the Manage product and its rights to use from Monsanto in early 2005 and now sells the very same product as Sedgehammer.
| Active Ingredient: | Halosulfuron-methyl 75% |
| Target pests: | Purple Nutsedge, Yellow Nutsedge, Kyllinga |
| Application: | Sedgehammer in the 13.5 gram packet already contains surfactant. Sedgehmmer in the 1.33 oz. bottle does not contain surfactant and should be used separately. |
| Yield: | Mix 13.5 grams in 1 gallon of water. 1 mixed gallon of solution will cover 1000 sq. ft. One full bottle (1.33 oz.) makes approx. 40 gallons of finished solution. The 13.5 gram pack only makes 1 mixed gallon of solution. |
| Manufactured By: | Gowan (UPC: 714654514980) |
Product Documents
Sedgehammer herbicide kills nutsedge without injury to turfgrass, established ornamentals, shrubs, and/or trees.
Use Instructions:
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1.33 oz container: Using included spoon, measure .9 grams (one spoonful) and pour into 1 gallon of water.
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Swirl or mix the solution thoroughly. The 0.9 grams will cover 1000 sq. ft. One full bottle (1.33 oz.) makes approx. 40 gallons of finished solution.
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Add 2 teaspoons of a nonionic surfactant (spreader sticker) and swirl gently until mixed.
A nonionic surfactant is an additive that aids the penetration of Sedgehammer into the plant tissue. Surfactants are not only used in horticulture but are commonly used in many cleaning products. Their properties enable the herbicide to “sheet” or spread across the surface of a plant or weed. It is always recommended that a surfactant be used to help SedgeHammer penetrate the waxy layer of the nutsedge leaf. The surfactant also aids in dispersing the water droplets evenly across the leaf tissues and facilitates adsorption into the vascular system of the plant.
For best results, add a surfactant that is specifically made for horticultural purposes and labeled for use with an herbicide.
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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.
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58 of 61 people found this review helpful:
It works!
By Charles on June 20, 2010I'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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34 of 34 people found this review helpful:
Sedgehammer
By Gary on July 16, 2010I 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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27 of 28 people found this review helpful:
The Sedge Gets Hammered
By Dennis on July 7, 2010I 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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24 of 25 people found this review helpful:
Sedgehammer - THE solution for nutsege
By Len on September 2, 2010This 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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17 of 17 people found this review helpful:
SedgeHammer Works!
By Angela on September 6, 2010Despite 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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Awesome
By Paul on June 18, 2013
Verified Purchase
This product works quick, used on St. Augustine turf, in S. FL, highly recommended, knocked out my yellow nutsedge problem
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I buy all my P.control stuff here - amazingly fast shipping
By Cat on May 30, 2013Good products - FAST shipping !! It's like they read my mind before I hit the send button! I've ordered 3-4 times now and it's always the same. I order and BOOM ! it's in my mailbox before I know it.
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SedgeHammer Herbicide
By Fred on May 23, 2013 Verified Purchase
This product really works well on nutweed. Use as instructed. Needs a second application i two weeks Do my Own Prest Control delieved promptly.
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67% effective
By Stephen on May 21, 2013 Verified Purchase
With first application, after 10 days it seems about 1/3 nutsedge is dead, 1/3 is lighter green to yellow and 1/3 unaffected. I'll try one more round in two weeks to see if I get better results before switching to another sedge killer.
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This product works great!
By Tom on May 14, 2013 Verified Purchase
I have a small bed that was just re-landscaped with liriope and a large crape myrtle. The area had sod with nutsedge prior. We thought that after digging up old sod and soil the nutsedge would be gone....no such luck. A friend of mine who's a landscape architect recommended Sedgehammer, and it works great! I spot sprayed the first time, as the shrubs were newly planted (aout 2 weeks prior), and you can see the visibly dead nutsedge. I am going to spray a second application more broadly this time, and that should do the trick! Now if anyone has any suggestion for killing my #@%# neighbors invasive bamboo-other than nepalm, I would greatly appreciate it!
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2 of 2 people found this review helpful:
Sedge Hammer
By Evan on January 17, 2013 Verified Purchase
The best and only thing that will kill the nut sedge in your turf, can't find it anywhere cheaper than on domyownpestcontrol.com The service is always phenomenal, and the staff is great. I love doing business with them due to their fair prices, exceptional service, and knowledgable staff. -Evan's Lawn Care Service, LLC. CEO/Owner
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1 of 1 people found this review helpful:
Works 100%
By Dennis on November 18, 2012Sedghammer herbicide does it work? Yes, if you read the label. I followed the instrustions and had 100% results.
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Sedge Hammer
By Adam on October 28, 2012 Verified Purchase
lHard to say so far. Has been applied for about 10 days now and of I use my imagination I can almost see some yellowing starting to happen. I guess I will know more in a few weeks. I did puchase enough to do a second application
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Sedgehammer
By Kenneth on October 2, 2012Sorry Sledgehammer didn't work for me, even after two applications. I just dug all my daylilies out of the bed and used Round Up today. The temperature has been warm enough and all I had was 288 square foot area, so I sprayed it very good both times. I waited 9 days after the first spraying and then used the second packet and hoped it would do the trick. It did cause about 1/2 the nut grass to start yellowing after about a week.
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I sprayed a small,thickly grow area, in the garden.
By Ronald on September 28, 2012It all turned yellow. I PRONOUNCED IT PRESUMED DEAD!!
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April 16, 2011 Ken asked:
QAfter I mix 2 gallons of Sedgehammer, how long will it remain effective?
I have my nutsedge down to a small area with only a dozen colonies so I mix 2 gallons and fill a one quart spray bottle for convenience. How long will the remaining liquid product remain effective?
ATypically it is not recommended to leave any pesticide solution in a sprayer for more than two weeks at a time. You should only mix what you plan on using. If you want to leave the product in the sprayer for longer you should at least shake and agitate the sprayer every few days to keep the solution from separating.
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April 27, 2011 Courtney asked:
QCan I use SedgeHammer to kill nutsedge right before sodding with St. Augustine?
I have bare soil (with nutsedge) right now and am planning to sod in the next 7-10 days. Or do I need to place the sod and then wait 4-6 weeks and go over it with the SedgeHammer?
APer the label on Sedgehammer, you are not supposed to reseed or sod within 3 to 4 weeks of using Sedgehammer. Therefore you have only a couple of options. One, is to treat the sedgehammer and stun it with a glyphosate (round up) type product which allows you to reseed within 7 days with no issues. Or, you can treat with Sedgehammer and wait 3 to 4 weeks before re sodding. If you must sod in 7 to 10 days, then you should treat the nutsedge with a glyphosate product and then you can treat with sedgehammer later if any new nutsedge makes it through the sod you are applying.
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July 11, 2011 Laurence asked:
QWhat surfactant should I use with the Sedgehammer Herbicide?
Is there a preference as to which type? I noticed there are varying types, Non-Ionic, DyneAmic. Please advise as I plan to purchase ASAP. Thanks
AAll the surfactants on our website are non-ionic which is the type of surfactant the manufacturer of Sedgehammer herbicide recommends for use with their product.
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June 26, 2011 Tee asked:
QDoes a measuring spoon come with the 1.33 oz bottle of Sedgehammer? If not, how would you measure .9 grams?
AYes, there is a measuring device in the box of the Sedgehammer 1.33 oz.
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April 28, 2010 Jean asked:
QI want to eliminate nutsedge. Can SedgeHammer Herbicide be applied to a new, Empire Zoysia sodded lawn?
ASedgehammer is great for the nutsedge, but it is not recommended to be used on a brand new lawn. The real question would be how "new" is your lawn? Sedgehammer should only be used once your "new" grass is established, usually after 2-3 months so the roots have time to really take root. If this is the case and your lawn is established, then SedgeHammer would be great to use. It is recommended that you use a surfactant with the SedgeHammer to help it stick to the nutsedge and be more effective. We recommend Dynamic to use with the Sedgehammer.
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March 2, 2013
Steve from Jax. Fl. asked:
QDoes the temperature have any effect on SedgeHammer?
AYes, temperatures can have an effect on the Sedgehammer. You should only apply the product when the plants are actively growing (cold temps can prohibit growth) and should not be applied when temps are over 85F to avoid damaging beneficial plants.
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February 10, 2013 Fred asked:
QHow long does Sedgehammer take to break down?
I had a bad infestation of nut grass in a garden bed which I have since sprayed.
How long before I can safely use it as a vegetable garden?
AWe checked with the manufacturer on this one and they told us that the product can stay active in the soil for up to 3 years and a veggie garden should not be planted in this area for at least 3 years.
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February 11, 2012
William from Lawrenceville, Ga asked:
QIs SedgeHammer post emergent only? Is it effective as a pre emergent for nutsedge?
ASedgehammer is a post emergent nutsedge product only. It will not prevent nutsedge from germinating. Unfortunately pre-emergents do not control summer weeds like nutsedge.
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October 21, 2011
Thomas from Moulton, Texas asked:
QI have nut grass in my garden. Will this product control it and can I use it with growing vegetable plants?
ASedgehammer is meant more for nutsedge control in turf grass and it cannot be used near a vegetable garden or anything edible. For nutsedge in landscaped areas it is recommended to spot treat the sedge with a glyphosate or Round Up type product directly. We recommend Roundup QuickPro 1.5 oz. packs for ease of use.
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September 19, 2011
Randall from Piedmont Sc 29673 asked:
QWhat product would you recommend to spray the infield of a baseball field located in the upstate of SC?
We had soil hauled in from the lower part of SC and placed in the infield. Since that time we have had problems with a grass that some people call nutsedge. We have tried Roundup but it keeps coming back.
AFor nutsedge, the best product by far is Sedgehammer herbicide. Sedgehammer is a selective herbicide that will only kill the nutsedge.
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August 24, 2011
Brent from Pittsville, Md asked:
Qwill this product kill crab grass as well?
ASedgeHammer Herbicide is not labeled for crabgrass and may not provide adequate results for this weed. You can read page 4 of the SedgeHammer product label for a full list of the weeds this product will treat. We do have carry a full line of products for crabgrass control: Crabgrass Control Products. We encourage you to look through these products and read the product labels to be sure it will fit your needs. The product labels can be found on each individual product page under the picture of the product.
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August 11, 2011
Mark from Lansdale, Pa asked:
QI have a large lawn - about 50,000 square feet. Can this be used on a hose end sprayer and, if so, how?
AA hose end sprayer would not be the best applicator for a water dispersible granule like Sedgehammer. It is important to make sure the correct amount of product goes over a specific area and hose end sprayers are not known to be very accurate. You will need to mix 0.9 gram of Sedgehammer (using the measuring scoop provided) in one or two gallons of water to treat 1000 square feet. Add 2 teaspoons (1/3 fluid ounce) of nonionic surfactant per gallon of water. Ensure the product is measured as a level scoop and not rounded.
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May 20, 2011 John asked:
QI also have bare soil (with nutsedge) throughout. I plan to plant a lawn in about 8 months to a year.
Because I have no plants, I thought about using vegetation killer, but do not want to damage the soil. What are my options? This stuff is spreading fast!
AIf you only have bare soil with sedge growing from it, then you should just use a glyphosate product which will kill anything it touches basically. Sedgehammer is great for sedge, but is meant for use when nutsedge is in grass that you don't want to kill. A professional glyphosate will kill the nutsedge much quicker. Also it does not stay in the soil that long, so you can re-seed just weeks after application. Vegetation killers and soil sterilants are meant to not let anything grow in that area for a long time. So if you plan on seeding eventually then you should not use a vegetation killer product.
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September 10, 2010 Keith asked:
QI applied Sedgehammer about five days ago. How long until it works, and I will see the nutsedge start to die?
AMost of our customers begin to see results in 5 to 7 days, as long as the product was applied correctly according to the label. For specific questions and inquiries about Sedgehammer, we recommend calling the manufacturer who is the expert on their own product. The manufacturer is Gowan Company and they can be reached at (928) 783-8844.
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July 26, 2010 Paul asked:
QI just ordered a bottle of Sedgehammer and Dyneamic surfactant. I have a bad growth of nut grass.
How many times should I treat before doing a complete re-sod? How long should I wait before re-sodding.
AAlthough we now carry herbicides, our expertise is mainly in pest control. We began carrying herbicides due to popular request but we are not giving specific treatment advice. We would advise you to call the manufacturer of Sedgehammer for specific treatment advice. The manufacturer is Gowan and they can be reached at (928) 783-8844.
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