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.
Once SedgeHammer has been mixed with water, it should be used or discarded within 24 hours of dilution.
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.
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.
For Environmental Hazards regarding SedgeHammer Plus Herbicide, please view the following statment by the manufacturer on page 2 of the product label:
“Do not apply directly to water, to areas where surface water is present or to intertidal areas below the mean high water mark. Do not contaminate water when disposing of equipment washwaters or rinsate. This chemical demonstrates the properties and characteristics associated with chemicals detected in ground water. The use of this chemical in areas where soils are permeable, particularly where the water table is shallow, may result in ground water contamination."
Please be sure to review the product label for more information and complete application instructions. You may also view the Safety Data Sheet here.
SedgeHammer is not labeled to target clover. It should not be applied to desired clover plots only listed, established turfgrasses as directed.
Yes, SedgeHammer Herbicide can be applied when soil temps are above 55 degrees and weeds are actively growing.
To prevent burning or injury to the lawn, do not apply when air temperatures are above 85 degrees. During hotter months, applying in the early morning or later in the evening when temperatures are at the coolest for the day are recommended.
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.
No, SedgeHammer Herbicide can be applied to turfgrass, but not to ornamentals, shrubs, and/or trees. It should not be applied as an over-the-top spray to desirable flowers, ornamentals, vegetables, shrubs, or trees.
SedgeHammer + Herbicide is not labeled to provide control of desert broom weed.
Hi-Yield 2, 4-D Selective Weed Killer, which is a selective post-emergent liquid concentrated herbicide that controls various broadleaf weeds and other noxious plants, including broomweed.
Please refer to the product label for complete application instructions, and use as directed.
The manufacturer of SedgeHammer + Herbicide states on the product label not apply this product around desirable flowers, ornamentals, vegetables, shrubs or trees. In order not to prevent damage to any desirable vegetation, including trees and shrubs, you should keep you application well outside the drip lines and root zones of trees, and avoid any drift from contacting ornamentals or edible vegetation.
