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.
We recommend that you apply quinclorac separately from the small Sedgehammer packets since the Sedgehammer packet already contains a surfactant. Since quinclorac products generally require a more aggressive methylated seed oil surfactant, mixing these would cause extra stress on your desirable grass and may be too harsh.
We would not recommend tank mixing SedgeHammer Herbicide with something like Trimec as the Sedgehammer requires a surfactant to use and Trimec does not. Using one with Trimec could cause injury to your lawn since it already contains one and does not need any additional.
Triad Select Herbicide can be tank mixed with Sedgehammer to treat broadleaf weeds but would not take the place of a Non Ionic Surfactant.
SedgeHammer Herbicide will kill yellow and purple nutsedge but not globe sedge. To control all 3 you would need to use something like the Dismiss Turf.
SedgeHammer Herbicide is safe for application to established Zoysia.
SedgeHammer Herbicide is only labeled for turf and ornamental applications. It cannot be used in a pasture.Unfortunately, we apologize but do not have a product that would kill the sedge and also be safe for pasture areas. We would recommend contacting your local agricultural department for a recommendation.
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.
After treating with SedgeHammer+ Herbicide it will take time to completely kill the treated sedge but because the dead sedge will eventually decompose, there is no need to pull out the dead weeds.
The SedgeHammer Herbicide packs contain a surfactant to increase the effectiveness of the product. It is not necessary to apply it with another product for faster results. Please refer to the product label for complete mixing and application instructions.
Yes, fertilizer can be applied at the same time as SedgeHammer Herbicide. There is no wait time.
SedgeHammer Herbicide should not be applied as an over the top spray to desirable around groundcovers, ornamentals, vegetables, shrubs, trees, or flowers. Our best recommendation is to spot treat with a glyphosate product like Roundup QuikPro, taking care to not spray desirables.
Because sedges are so hard to control there aren't many pre emergents on the market that will work on nutgrass/sedge at all. Freehand is one that works well and can be used in a variety of bedding and turf areas.
You can either spot treat with roundup or sedge control product like Sedgehammer for post emergent control over the nutgrass.
SedgeHammer Herbicide is a post emergent herbicide which should only be used to control listed weeds during a time when they are actively growing. Most weeds are in an actively growing state when soil temperatures (not air) are a minimum of 65 degrees or higher consistently for a week or more.
