You should be fine to spot treat the nutsedge using Sedgehammer as long as the lawn is not over-stressed by heat or drought or from the other herbicide being applied. Be sure to apply according to the product label.
SedgeHammer Herbicide can be applied with a hose end sprayer. Please be aware the application through a hose-end sprayer may not be as accurate as using a hand pump sprayer.
Sedgehammer Herbicide is not labeled to be used in pastures. The only product we currently carry for yellow nutsedge that is labeled for us in pastures is AXXE Broad Spectrum Herbicide. Please refer to the product label for complete instructions.
SedgeHammer Herbicide should not be used on pastures or grazing areas, and you should not treat around hay that will be used for animal feed. The SedgeHammer should not affect Timothy grass that may be contacted by the herbicide, although the product label does not specify information about this plant, so we would recommend spot treating a small area first before applying over a large area with this plant. The 1.33 oz bottle of SedgeHammer will yield about 40 gallons of finished solution. You should add 2 teaspoons of a non-ionic surfactant per gallon of water when diluting SedgeHammer from the larger bottle. The smaller packets already have a surfactant mixed in with the product.
Sedgehammer should not be applied to any areas where there are desired ornamentals, flowers, shrubs etc. It should only be applied to turfgrass for nutsedge control.
Sedgehammer Herbicide should be applied to established lawns allowing 4 weeks between seeding and application. Please refer to the product label for specific mixing and application instructions.
Sedgehammer can be applied to established listed turfgrasses for nutsedge control. Allow 4 weeks between application and seeding. Please refer to the product label for complete mixing and application instructions.
We have heard some folks use dish soap as a surfactant. We cannot recommend it, because there is not enough research behind it. We recommend a product like Non Ionic Surfactant to be mixed with Sedgehammer.
Sedgehammer can be used in St Augustine grass per the product label but is not labeled for wandering jew and we do not have a product that is labeled for this weed. It might be best to spot treat this weed with a glyphosate based product and reseed the areas.
Sedgehammer will only control weeds that are actively growing so it likely will not kill anyting in the winter once the plants are dormant and may only give partial control in the fall. It is best used in the warmer spring and summer months and early fall. Per the manufacturer, if you plan to plant a vegetable garden you cannot do so within 3 years of applying Sedgehammer in the same area unless you remove the soil treated with Sedgehammer and bring in fresh soil.
Yes, Sedgehammer Herbicide is labeled to kill various types of nutsedge, including green nutsedge.
The SedgeHammer 13.5 gram box already contains a surfactant so no additional surfactant would be needed. If you are using the 1.33 oz bottle of SedgeHammer, we would recommend using Non-Ionice Surfactant for Herbicides. If using the 1.33 oz. bottle, use 0.9 g (one spoonful) in 1-2 gallons of water with 2 teaspoons of a nonionic surfactant.
Sedgehammer Herbicide should not be used over any desirable ornamental plants, including roses. You could spot treat with a product like Roundup in the area.
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.
For nutsedge control it is best treated using something like Sedgehammer Herbicide which is specifically designed for it and is also for some other broadleaf weeds. For signal grass is it best treated with a pre-emergent like Prodiamine 65 WDG but complete control is not always possible with this weed as it is a very difficult weed to control. You could also spot treat with a glyphosate based product like GlyPhoSel Pro and then reseed/so the area. The University of Florida has some information here about.
Sedgehammer Herbicide is safe for use around established ornamentals, such as ornamental strawberries.