Sedgehammer herbicide is a water dispersable granule formulation used to kill and remove Nutgrass and Mullumbimby couch without affecting your lawn. Sedgehammer can be safely used on lawn varieties including bent grass, buffalo, couch, kikuyu, perennial ryegrass, QLD Blue couch and Tall fescue.
Nutgrass has a rhizomatous root system and a very shiny leaf that resists chemical penetration. For this reason, it is recommended that you use a good quality wetting agent (surfactant) mixed with your chemical, such as Aqua Force or Moist.
- Mullumbimby Couch
Safe Grass Varieties
- QLD Blue
How to use Sedgehammer
Apply at a rate of 1.3 g (measuring spoon included) per 10 L of water to treat an area of 100 square metres. Apply in Spring or Summer when the Nutgrass leaf growth is greater than 5 cm, or when Mullumbimby couch leaf growth is greater than 2 cm. To obtain best results, apply when weeds are actively growing. With mature Nutgrass plants or high populations, repeat applications may be required.
Do Not Use
- On newly established turf
- After renovation
750g/kg Halosulfuron methyl
Mode of Action: Group B Herbicide
Group B herbicides block the ALS enzyme essential in the production of the
branched-chain fatty acids (amino acids) leucine, isoleucine and valine. These amino
acids are essential for the production of proteins and for normal plant growth, while
also providing precursors for a number of secondary products such as cyanogenic
glycosides, glucosinolates and acyl-sugars.
Group B herbicides are weak acid herbicides with moderate water solubility and are absorbed via the leaves and the roots, using the aqueous pathway.
For more information on Nutgrass