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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:||* 1.33 oz bottle - Halosulfuron-methyl - 75% *
* 13.5 gram package 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:||0.5 oz. (13.5 grams) in 1 to 2 gallons of water per 1,000 sq. ft.
* Use a Surfactant to Increase Effectiveness
* See label for complete application instructions
Sedgehammer in the 13.5 gram packet Contains Surfactant
Sedgehmmer in the 1.33 oz. bottle Does Not Contain Surfactant and should be used
|Yield:||Mix 13.5 grams in 1-2 gallons of water to 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 finished application of solution.|
|Formulation:||Professional Product (1.33. bottle)|
|Shipping Weight:||0.06 lbs|
How SedgeHammer Herbicide Works
SedgeHammer is a water-soluble granule formulation that is mixed with water and applied to target plants with a sprayer. SedgeHammer 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.
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.
SedgeHammer Target Weeds
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
Target Uses of SedgeHammer
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. SedgeHammer 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: 1.33 oz. bottle - Halosulfuron-methyl 75%; 13.5 g package – Halosulfuron-methyl 5%
SedgeHammer Application Instructions
SedgeHammer is a powder concentrate to be diluted with water and applied with a pump sprayer. SedgeHammer 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.
Mixing Instructions, 1.33 oz container:
Using included spoon, measure .9 grams (one spoonful) and pour into 1 gallon of water. Measure level scoops only (not rounded).
*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.
*Add 2 teaspoons of a nonionic surfactant (spreader sticker) and swirl gently until mixed.
For best results, add a surfactant that is specifically made for horticultural purposes and labeled for use with an herbicide. Use only surfactants that contain at least 80 percent active material. Do not exceed the recommended amount of surfactant due to potential turf injury at higher rates.
*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.
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 1.33 oz. bottle makes 40 gallons of finished solution. Each gallon of finished solution covers approximately 1,000 square feet. In high volume broadcast applications, each 1.33 oz. bottle covers 1-2 acres.
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
*1.33 oz. bottle – Use 0.9 g (one spoonful) in 1-2 gallons of water with 2 teaspoons of a nonionic surfactant – More economical for broadcast applications
Broadcast applications (1.33 oz. bottle only):
*2/3 oz. in sufficient water for uniform application per acre – light infestations
*1 1/3 oz. in sufficient water for uniform application per acre – heavy infestations
*Do not exceed 4 applications per acre per season. Do not exceed 1 quart of surfactant per acre. Mix only what is needed at the time of application. Do not store unused solution.
SedgeHammer is for use in the following areas:
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.
- May be tank mixed with Glyphosate herbicides in areas such as rights-of-way or fallow land.
- Convenient pre-measured packets or scoop included with 1.33 oz. bottle.
- Small (13.5 g) packets already contain surfactant.
- Superior control of yellow and purples nutsedges.
- People and pets may return to treatment area once spray is dry.
- Labeled for use in a variety of warm and cool weather turfgrasses.
Extra Tips for Using SedgeHammer
- For best results, do not mow turf for 2 days before or 2 days after application.
- SedgeHammer is effective if no rainfall occurs within 3 hours, but best results are obtained with no rainfall or irrigation for at least 4 hours.
- Use only in established turfgrass: allow turf to develop a good root system and uniform stand before application.
- Results may take 5-7 days to begin to appear.
- Do not apply when turfgrass or nutsedge is under stress.
- Do not apply when temperatures exceed 85 degrees F.
- Do not apply to golf course putting greens.
- For transplanted woody ornamentals, allow 3 months after transplanting before applying this product.
- When using in fallow areas, allow 4 weeks between application and transplanting of woody ornamentals or seeding or sodding of turfgrass.
- SedgeHammer may remain active in the soil up to 3 years after application.
- Store concentrate under cool, dry conditions.
Compare to: ProSedge Herbicide
See all 253 reviews »
136 of 140 people found this review helpful:
By Charles in Bowling Green, Ohio 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!
81 of 83 people found this review helpful:
By Gary in Ozark, MO 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.
76 of 77 people found this review helpful:
Sedgehammer - THE solution for nutsege
By Len in Carrollton, VA 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.
55 of 58 people found this review helpful:
The Sedge Gets Hammered
By Dennis in Yorktown, VA 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.
55 of 58 people found this review helpful:
By Angela in Philadelphia, PA 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 $$.
15 of 15 people found this review helpful:
This may not make sense at having to use SH twice.
By Chris in Grass Valley, CA on 07/07/2011
SedgeHammer (SH) is great! Two days after application the Sedge shows yellowing and then it's gone. Last year was the first application of SH to our newly laid lawn. Little did we know that tilling the soil would multiply the Sedge, so it was not surprising to see them again this year. They're gone now. ;-)) BTW, the label calls for 2 Tablespoons of nonionic surfactant. That's a bit perplexing to a layperson, but I found that JetDry (for dishwashers) is a nonionic surfactant. It worked!
19 of 19 people found this review helpful:
By M. in Columbia, MO on 09/29/2010
SedgeHammer definitely worked on the yellow nutsedge that I applied it on. It is a little expensive, but the 1.33 oz. bottle is the way to go. A little bit goes a long way. I discussed my nutsedge problem with quite a few lawn pros and most agreed this is the most effective solution. I agree, and this product does kill the nutsedge, usually takes about a week. Works best on young plants but also kills mature ones. Does not harm the good grass.
27 of 28 people found this review helpful:
sedgehammer for nutshedge weed
By Jim in la crosse wi on 09/14/2010
worked awesome - I used 1tbsp of dish liquid for surficant for one mixed gallon of sedgehammer.
14 of 14 people found this review helpful:
products that WORK!
By Brandon in abilene,tx on 09/12/2010
I too had used other products to try to rid my yard of nutgrass. Products like Image and several others. Nothing really worked. I used one little one gallon pack from my local farm n ranch store and voilla, DEAD. It hasn't come back in months and I couldn't be happier! Do use a non-ionic surfactant with no less than 80 percent active ingredient.
17 of 17 people found this review helpful:
Adios, Water Grass
By David in St. Louis, MO on 09/09/2010
I have just under an acre and about 35-40% was infested with this nasty weed. I swear I'd be cutting my grass and when I would turn around to see how I was doing, the nutsedge was already an inch taller than the grass I just cut. I spent 5 hours on a Saturday covering my lawn with doubt. I cut my grass on Monday with despair not seeing any browning or "death". However, I sit here today with a big ol' grin on my face because it is evident that the weed isn't growing and my lawn is returning. It is truly amazing how this product does nothing to the grass and eliminates this pest of a weed. Best lawn purchase I've made in years.
15 of 22 people found this review helpful:
By Curt in New Albany, MS on 08/22/2010
As it turns out, SedgeHammer is meant to be used before nutsedge has sprouted or is very young, something I missed in the review. I test sprayed some older grass and there some yellowing affect after 2 weeks. I will save the remaining until next spring. It cost far too much to waste!
20 of 21 people found this review helpful:
SedgeHammer seems to be working
By Cy in Lansdale, PA on 08/16/2010
I purchased the SedgeHammer 1 gallon sample, and applied to all my 1000+ nutgrass. It killed at least 900, so I purchased enough for 40 1000 gallons. The last 100 just got spread and I hope that the last I will see....However, I have enough to try and be sure that it will not return. It has been quite a problem in Ocean City, NJ....and we also have it my Retirement Community. In fact, it is the Landscape people of this large community I went to, to find their recommendations....They said SedgeHammer is the only way to go. So far I am very well pleased, Cy...Doc Woods Community
18 of 20 people found this review helpful:
SedgeHammer to the Rescue
By Bj in Palm Desert, CA on 08/13/2010
I spent a good amount of money last year, = replacing grass with Palm Springs Gold, adding Hibiscus and Bird of Paradise plants to my little Eden, feeling assured it was practical, saving water, and would require minimum attention. WRONG ! From the golf course, adjoining my property came the nut grass, = ugly & aggressive =a frontal attack, & shooting up everywhere. Bottom Line = On the offensive ! SedgeHammer's on the job, and showing effects. Sprayed under the mid=day sun, initially fades the grass, while it works down to the root system. Very pleased with the product, and I'm also spreading the word to friends = for your excellent service.
22 of 22 people found this review helpful:
By Ed in St. Louis, MO on 08/10/2010
Best price on the Internet that I could find. Therefore, excellent value plus free shipping. A product that works well on Nut Sedge. Surely have this in my Favorites Folder to come back again.
27 of 28 people found this review helpful:
By Chuck in Durham, NC on 08/04/2010
I purchased SedgeHammer from DoMyOwnPestControl.com and it worked immediately. The process of getting my order filled and delivered was exceptional. I applied the product to the nutsedge that had taken over my front yard. After one application, no more nutsedge.
Have a question about this product?
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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.
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 in the bottle size (1.33 oz). The 13.5 gram pack of SedgeHammer already includes a built-in surfactant.
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.
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.
08/12/2013 C from Baton Rouge, La
QI notice that you recommend that Sedgehammer not be applied when temps are over 85F.
Can it be safely applied in the early morning prior to the high afternoon temps to avoid damaging other plants?
AYou can safely apply Sedgehammer in the early morning to avoid damaging other plants, it is only during application do you want to avoid spraying when temps are above 85F
04/17/2015 Billy from Colt, Ar
QHow long must sedgehammer be applied before being affected by rain
ASedghammer will be rainfast 4 hours after application.
02/14/2015 Barbara from Bastrop, La
QHow log should I wait to plant vegetables after I use the SedgeHammer Herbicide?
AWe checked with the manufacturer on this one and they told us that Sedgehammer 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.
08/26/2013 Nolberto from Delano, Ca
QHow soon before and after applying Sedgehammer herbicide can I water my lawn?
08/08/2013 Todd from Collierville, Tn
QI used Sedgehammer on nutgrass/nutsedge several days ago and it has yet to even begin to turn brown.
Should I be concerned?
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. The product label does state that the product 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.
08/02/2013 George from Warminster Pa.
QWhen is the best time to apply Sledgehammer, before or after cutting your lawn?
AWe recommend to apply Sedgehammer two days after mowing your lawn. This will allow the weeds to be more open to absorbing the Sedghammer. You also want to wait at least 2 days before mowing your lawn after application.
07/06/2013 Daniel from Wrightstown
QHow soon is SedgeHammer Herbicide safe?
AIt is safe for people and pets to be around the area Sedgehammer has been applied, after the treated areas have completely dried.
03/02/2013 Steve from Jax. Fl.
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.
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.
QWill Sedgehammer damage my Loriope garden?
ASedgehammer is one of the most “gentle- to- turf” products around. It has proven to be safe to most commonly used grasses of North America and has been successfully used for many years. Many other products are safe to only warm season or certain kinds of turfgrass. Turf should be well established with a good root system prior to application. We recommend contacting your local cooperative extension office to enquire about specific plants when using SedgeHammer to be sure it will not cause damage.
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.